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46% off
500+Pcs DIY V8 Engine Model Metal assembly kit Decoration Teaching Mechanical car engine science physics toy gift 500+Pcs DIY V8 Engine Model Metal assembly kit Decoration Teaching Mechanical car engine science physics toy gift

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$4643.71$8599.47

53% off
TECHING Galaxy Solar System Assembly Model Kit DM405 Metal Mechanical Science Education Toy TECHING Galaxy Solar System Assembly Model Kit DM405 Metal Mechanical Science Education Toy

TECHING Galaxy Solar System Assembly Model Kit DM405 Metal Mechanical Science Education Toy

$3219.77$6850.57

DM119 Large Turbofan Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

DM119 Large Turbofan Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

$7670.00$7670.00

50% off
R26 4.3CC V2 Twin Cylinder Engine Model - Mini Metal Motorcycle Engine with Wooden Base - Collectible Hobby Toy Gift for Science R26 4.3CC V2 Twin Cylinder Engine Model - Mini Metal Motorcycle Engine with Wooden Base - Collectible Hobby Toy Gift for Science

R26 4.3CC V2 Twin Cylinder Engine Model - Mini Metal Motorcycle Engine with Wooden Base - Collectible Hobby Toy Gift for Science

$878.99$1757.99

DM118 V8 Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

DM118 V8 Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

$4000.00$4000.00

55% off
Metal Boiler Steam Engine Model Full Set Steam Engine Model with Original Pressure Gauge Science Experiment Toy Collection Metal Boiler Steam Engine Model Full Set Steam Engine Model with Original Pressure Gauge Science Experiment Toy Collection

Metal Boiler Steam Engine Model Full Set Steam Engine Model with Original Pressure Gauge Science Experiment Toy Collection

$1349.55$2998.99

Space MOC Building Blocks UCS Launch Tower Mk I Technology Bricks Science Creative Model Toys Creative Display Collection Gifts Space MOC Building Blocks UCS Launch Tower Mk I Technology Bricks Science Creative Model Toys Creative Display Collection Gifts

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MOC Space Shuttle Launch Pad Building Block DIY Assembling Bricks Model Science Creative Toys Rocket Device Collection Xmas Gift MOC Space Shuttle Launch Pad Building Block DIY Assembling Bricks Model Science Creative Toys Rocket Device Collection Xmas Gift

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25% off
F135 fighter turbojet engine model 3D three-dimensional metal assembly building block toy launch popular science gift F135 fighter turbojet engine model 3D three-dimensional metal assembly building block toy launch popular science gift

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48% off
Horizontal Four-stroke Gasoline Engine Model Metal Single Cylinder Diesel Engine Internal Combustion Science Experiment Toy Gift Horizontal Four-stroke Gasoline Engine Model Metal Single Cylinder Diesel Engine Internal Combustion Science Experiment Toy Gift

Horizontal Four-stroke Gasoline Engine Model Metal Single Cylinder Diesel Engine Internal Combustion Science Experiment Toy Gift

$868.39$1669.99

DM136 T700 Turboshaft Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

DM136 T700 Turboshaft Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

$4610.00$4610.00

50% off
Mini Metal Heat Pump Vertical Stirling Engine Model High Performance External Combustion Engine Physics Science Research Toy Mini Metal Heat Pump Vertical Stirling Engine Model High Performance External Combustion Engine Physics Science Research Toy

Mini Metal Heat Pump Vertical Stirling Engine Model High Performance External Combustion Engine Physics Science Research Toy

$500.66$1001.33

Suction Fire Type Stirling Engine Kit High-end Pure Copper Air Cylinder Heat Energy Model Physics Science Experiment Toy

Suction Fire Type Stirling Engine Kit High-end Pure Copper Air Cylinder Heat Energy Model Physics Science Experiment Toy

$4346.86$4346.86

45% off
500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift 500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift

500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift

$4616.97$8394.50

3 sold
60% off
MOC Building Blocks Space Series SA-23E Aurora Starfury Science Fiction Aircraft Technology Bricks DIY Assembled Model Toys Gift MOC Building Blocks Space Series SA-23E Aurora Starfury Science Fiction Aircraft Technology Bricks DIY Assembled Model Toys Gift

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$3541.12$8852.81

GBC Tower Creative Motor MOC Building Blocks Science Technology Bricks DIY Assembly Puzzle Toys Model Collection Display Gifts GBC Tower Creative Motor MOC Building Blocks Science Technology Bricks DIY Assembly Puzzle Toys Model Collection Display Gifts

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$15049.65$15049.65

48% off
Self Circulating Water Cooled Engine Model B-M Two-stroke Can Be Started DIY Science Teaching Aid Metal Toy Gift for Hobbyist Self Circulating Water Cooled Engine Model B-M Two-stroke Can Be Started DIY Science Teaching Aid Metal Toy Gift for Hobbyist

Self Circulating Water Cooled Engine Model B-M Two-stroke Can Be Started DIY Science Teaching Aid Metal Toy Gift for Hobbyist

$296.16$569.53

Articulated Low Floor Bus Moc Building Blocks Motor Machine Technology Bricks Car DIY Assembly Model Science Educational Toys Co Articulated Low Floor Bus Moc Building Blocks Motor Machine Technology Bricks Car DIY Assembly Model Science Educational Toys Co

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$9498.81$9498.81

2 sold
Stirling Engine DIY Metal Assembly Model Turn the Beads Movable Precision Machinery Toy Physics Science Popular Birthday Gift

Stirling Engine DIY Metal Assembly Model Turn the Beads Movable Precision Machinery Toy Physics Science Popular Birthday Gift

$8539.86$8539.86

61% off
TECHING V8 Engine Model 1/3 Scale Metal Mechanical Engine Science Experiment Physics Education Toy Gift TECHING V8 Engine Model 1/3 Scale Metal Mechanical Engine Science Experiment Physics Education Toy Gift

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$685.23$1756.99

48% off
MOC Marine Science Research Vessel Building Blocks Set Catamaran Ocean Exploration Ship Model Adult Collection Gift Toy MOC Marine Science Research Vessel Building Blocks Set Catamaran Ocean Exploration Ship Model Adult Collection Gift Toy

MOC Marine Science Research Vessel Building Blocks Set Catamaran Ocean Exploration Ship Model Adult Collection Gift Toy

$60.32$116.00

1 sold
16 Cylinder Stirling Engine Model Swash Plate Glass Hot Cylinder Engine Model Kit Engine Physics Puzzle Science Gift Toy

16 Cylinder Stirling Engine Model Swash Plate Glass Hot Cylinder Engine Model Kit Engine Physics Puzzle Science Gift Toy

$4703.86$4703.86

42% off
Star Game Citizen Moc Building Blocks Space Scense Technology Bricks Science Creative Toys DIY Assembly Model Xmas Gifts Star Game Citizen Moc Building Blocks Space Scense Technology Bricks Science Creative Toys DIY Assembly Model Xmas Gifts

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$5429.84$9361.80

51% off
14772PCS Space Launch Complex Building Blocks Rocket Platform Architecture Model DIY Assembly Creative Science Collection Gift 14772PCS Space Launch Complex Building Blocks Rocket Platform Architecture Model DIY Assembly Creative Science Collection Gift

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$5981.11$12206.34

UCS Battlestar Galactica MOC Building Blocks Space Series Spaceship Technology Bricks Science Collection Toys Creative Display G UCS Battlestar Galactica MOC Building Blocks Space Series Spaceship Technology Bricks Science Collection Toys Creative Display G

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MOC City Series Architecture Modularization Science Fiction Building Blocks Assembly Model Children's Puzzle Toys MOC City Series Architecture Modularization Science Fiction Building Blocks Assembly Model Children's Puzzle Toys

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GEJ79 Turbine Engine Model Kit Military Jet Generator Model Innovation Science Practice Laboratory Generator Models Toy

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$5836.00$5836.00

MUSA V2 Gas Engine Model Kit Metal Twin Cylinders 4 Stroke Engine with Wooden Base Science Educational Toy

MUSA V2 Gas Engine Model Kit Metal Twin Cylinders 4 Stroke Engine with Wooden Base Science Educational Toy

$6436.43$6436.43

Suction Fire Type Stirling Engine Kit High-end Pure Copper Air Cylinder Heat Energy Model Physics Science Experiment Toy

Suction Fire Type Stirling Engine Kit High-end Pure Copper Air Cylinder Heat Energy Model Physics Science Experiment Toy

$3723.79$3723.79

50% off
Stirling Engine Model Gas version Internal Combustion Steam Unit for STEM Science Experiment DIY Hobby Toy Gift for Enthusiast Stirling Engine Model Gas version Internal Combustion Steam Unit for STEM Science Experiment DIY Hobby Toy Gift for Enthusiast

Stirling Engine Model Gas version Internal Combustion Steam Unit for STEM Science Experiment DIY Hobby Toy Gift for Enthusiast

$469.49$938.99

60% off
Solar System Assembly Model Educational Toys Gifts 600 + Parts Full Metal Science Teaching Aids Solar System Model Ornaments Solar System Assembly Model Educational Toys Gifts 600 + Parts Full Metal Science Teaching Aids Solar System Model Ornaments

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$614.40$1535.99

53% off
TECHING Mini V2 Engine Model Metal Two Cylinder Engine Can Be Movable DIY Assemble Model Collected Gift Science Education Toys TECHING Mini V2 Engine Model Metal Two Cylinder Engine Can Be Movable DIY Assemble Model Collected Gift Science Education Toys

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$419.24$891.99

DM135 Turbojet Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

DM135 Turbojet Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

$4600.00$4600.00

500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift 500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift

500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift

$8000.00$8000.00

Space MOC Building Blocks UCSS 1:250 Scale Spaceship Technology Bricks DIY Assembly Science Toy Creative Display Collection Gift Space MOC Building Blocks UCSS 1:250 Scale Spaceship Technology Bricks DIY Assembly Science Toy Creative Display Collection Gift

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$7524.30$7524.30

experiment physics toy gift mechanical engine decoration teaching 500+Pcs DIY V8 engine model metal science

experiment physics toy gift mechanical engine decoration teaching 500+Pcs DIY V8 engine model metal science

$6176.00$6176.00

46% off
500+Pcs DIY V8 Engine Model Metal assembly kit Decoration Teaching Mechanical car engine science physics toy gift 500+Pcs DIY V8 Engine Model Metal assembly kit Decoration Teaching Mechanical car engine science physics toy gift

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$4643.71 $8599.47

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53% off
TECHING Galaxy Solar System Assembly Model Kit DM405 Metal Mechanical Science Education Toy TECHING Galaxy Solar System Assembly Model Kit DM405 Metal Mechanical Science Education Toy

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$3219.77 $6850.57

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DM119 Large Turbofan Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

DM119 Large Turbofan Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

$7670.00 $7670.00

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50% off
R26 4.3CC V2 Twin Cylinder Engine Model - Mini Metal Motorcycle Engine with Wooden Base - Collectible Hobby Toy Gift for Science R26 4.3CC V2 Twin Cylinder Engine Model - Mini Metal Motorcycle Engine with Wooden Base - Collectible Hobby Toy Gift for Science

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$878.99 $1757.99

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DM118 V8 Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

DM118 V8 Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

$4000.00 $4000.00

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55% off
Metal Boiler Steam Engine Model Full Set Steam Engine Model with Original Pressure Gauge Science Experiment Toy Collection Metal Boiler Steam Engine Model Full Set Steam Engine Model with Original Pressure Gauge Science Experiment Toy Collection

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$1349.55 $2998.99

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Space MOC Building Blocks UCS Launch Tower Mk I Technology Bricks Science Creative Model Toys Creative Display Collection Gifts Space MOC Building Blocks UCS Launch Tower Mk I Technology Bricks Science Creative Model Toys Creative Display Collection Gifts

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MOC Space Shuttle Launch Pad Building Block DIY Assembling Bricks Model Science Creative Toys Rocket Device Collection Xmas Gift MOC Space Shuttle Launch Pad Building Block DIY Assembling Bricks Model Science Creative Toys Rocket Device Collection Xmas Gift

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$3948.00 $3948.00

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25% off
F135 fighter turbojet engine model 3D three-dimensional metal assembly building block toy launch popular science gift F135 fighter turbojet engine model 3D three-dimensional metal assembly building block toy launch popular science gift

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$6290.00 $8386.67

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48% off
Horizontal Four-stroke Gasoline Engine Model Metal Single Cylinder Diesel Engine Internal Combustion Science Experiment Toy Gift Horizontal Four-stroke Gasoline Engine Model Metal Single Cylinder Diesel Engine Internal Combustion Science Experiment Toy Gift

Horizontal Four-stroke Gasoline Engine Model Metal Single Cylinder Diesel Engine Internal Combustion Science Experiment Toy Gift

$868.39 $1669.99

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DM136 T700 Turboshaft Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

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$4610.00 $4610.00

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50% off
Mini Metal Heat Pump Vertical Stirling Engine Model High Performance External Combustion Engine Physics Science Research Toy Mini Metal Heat Pump Vertical Stirling Engine Model High Performance External Combustion Engine Physics Science Research Toy

Mini Metal Heat Pump Vertical Stirling Engine Model High Performance External Combustion Engine Physics Science Research Toy

$500.66 $1001.33

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Suction Fire Type Stirling Engine Kit High-end Pure Copper Air Cylinder Heat Energy Model Physics Science Experiment Toy

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$4346.86 $4346.86

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45% off
500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift 500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift

500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift

$4616.97 $8394.50

3 sold

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60% off
MOC Building Blocks Space Series SA-23E Aurora Starfury Science Fiction Aircraft Technology Bricks DIY Assembled Model Toys Gift MOC Building Blocks Space Series SA-23E Aurora Starfury Science Fiction Aircraft Technology Bricks DIY Assembled Model Toys Gift

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GBC Tower Creative Motor MOC Building Blocks Science Technology Bricks DIY Assembly Puzzle Toys Model Collection Display Gifts GBC Tower Creative Motor MOC Building Blocks Science Technology Bricks DIY Assembly Puzzle Toys Model Collection Display Gifts

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48% off
Self Circulating Water Cooled Engine Model B-M Two-stroke Can Be Started DIY Science Teaching Aid Metal Toy Gift for Hobbyist Self Circulating Water Cooled Engine Model B-M Two-stroke Can Be Started DIY Science Teaching Aid Metal Toy Gift for Hobbyist

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$296.16 $569.53

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Articulated Low Floor Bus Moc Building Blocks Motor Machine Technology Bricks Car DIY Assembly Model Science Educational Toys Co Articulated Low Floor Bus Moc Building Blocks Motor Machine Technology Bricks Car DIY Assembly Model Science Educational Toys Co

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Stirling Engine DIY Metal Assembly Model Turn the Beads Movable Precision Machinery Toy Physics Science Popular Birthday Gift

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$8539.86 $8539.86

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TECHING V8 Engine Model 1/3 Scale Metal Mechanical Engine Science Experiment Physics Education Toy Gift TECHING V8 Engine Model 1/3 Scale Metal Mechanical Engine Science Experiment Physics Education Toy Gift

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$685.23 $1756.99

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MOC Marine Science Research Vessel Building Blocks Set Catamaran Ocean Exploration Ship Model Adult Collection Gift Toy MOC Marine Science Research Vessel Building Blocks Set Catamaran Ocean Exploration Ship Model Adult Collection Gift Toy

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16 Cylinder Stirling Engine Model Swash Plate Glass Hot Cylinder Engine Model Kit Engine Physics Puzzle Science Gift Toy

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Star Game Citizen Moc Building Blocks Space Scense Technology Bricks Science Creative Toys DIY Assembly Model Xmas Gifts Star Game Citizen Moc Building Blocks Space Scense Technology Bricks Science Creative Toys DIY Assembly Model Xmas Gifts

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14772PCS Space Launch Complex Building Blocks Rocket Platform Architecture Model DIY Assembly Creative Science Collection Gift 14772PCS Space Launch Complex Building Blocks Rocket Platform Architecture Model DIY Assembly Creative Science Collection Gift

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UCS Battlestar Galactica MOC Building Blocks Space Series Spaceship Technology Bricks Science Collection Toys Creative Display G UCS Battlestar Galactica MOC Building Blocks Space Series Spaceship Technology Bricks Science Collection Toys Creative Display G

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GEJ79 Turbine Engine Model Kit Military Jet Generator Model Innovation Science Practice Laboratory Generator Models Toy

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MUSA V2 Gas Engine Model Kit Metal Twin Cylinders 4 Stroke Engine with Wooden Base Science Educational Toy

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Suction Fire Type Stirling Engine Kit High-end Pure Copper Air Cylinder Heat Energy Model Physics Science Experiment Toy

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Stirling Engine Model Gas version Internal Combustion Steam Unit for STEM Science Experiment DIY Hobby Toy Gift for Enthusiast Stirling Engine Model Gas version Internal Combustion Steam Unit for STEM Science Experiment DIY Hobby Toy Gift for Enthusiast

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Solar System Assembly Model Educational Toys Gifts 600 + Parts Full Metal Science Teaching Aids Solar System Model Ornaments Solar System Assembly Model Educational Toys Gifts 600 + Parts Full Metal Science Teaching Aids Solar System Model Ornaments

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TECHING Mini V2 Engine Model Metal Two Cylinder Engine Can Be Movable DIY Assemble Model Collected Gift Science Education Toys TECHING Mini V2 Engine Model Metal Two Cylinder Engine Can Be Movable DIY Assemble Model Collected Gift Science Education Toys

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DM135 Turbojet Engine Metal Mechanical Model Kit DIY 3D Assembly Science Learning Toy

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500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift 500+Pcs DIY V8 Engine Model Kit Metal Mechanical Engine Decoration Teaching Science Experiment Physics Toy Gift

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Space MOC Building Blocks UCSS 1:250 Scale Spaceship Technology Bricks DIY Assembly Science Toy Creative Display Collection Gift Space MOC Building Blocks UCSS 1:250 Scale Spaceship Technology Bricks DIY Assembly Science Toy Creative Display Collection Gift

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