Under $100

ENJOMOR Metal Gamma Hot-air Stirling Engine Model with Lamp Beads Educational Toys Gifts Features: 1. Creative design: The Stirling engine is an ex...

Bell Whistles for Steam Engine M30/M30B/M31/M3B/S10/S10BFeatures:.The bell whistles for steam engine can make a very crisp sound through connecting...

Features:.Suitable for brass with a outer diameter of 4/3.5/3mm..The bending radius is 9mm..Able to bend the pipe 90-180 degrees..The product can b...

ENJOMOR Mini Vertical Flywheel Stirling Engine Model with Adjustable Speed Educational Toys&GiftsFeatures:.The Stirling engine, a simple but el...

Multi Stage Steam Turbine Physics Equipment Demonstration The steam turbine is a multi-stage steam turbine model. The cylinder of the multi stage s...

Miniature Steam Engine Kit Single Cylinder Engine Model Toy Gifts A steam engine is a heat engine that performs mechanical work using steam as its ...

DIY Assembly Steam Engine Kit Model Science Experiment with Electric GeneratorThe steam engine is more maneuverable and functional, compared with s...

Features: .Parameters: Air inlet diameter: 4mm, air outlet diameter: 6mm; output shaft diameter: 1.95mm; speed: up to more than 50000RPM .Exquisit...

ENJOMOR Custom γ-Type Stirling Engine Model Science Experiment Educational Toy with Voltage Digital Display Meter and Glow Lamp Bead Features:γ-typ...

γ-shape Stirling Engine Generator Model with LED Lights Voltage Digital Display Meter Science Educational Model STEM Collection Features:Exquisite ...

ENJOMOR Custom Balance Type Hot Air Stirling Engine Generator Model Science Experiment Educational Toy with Voltage Digital Display Meter and LED B...

ENJOMOR γ-Type Gas Displacement Piston Type Low Temperature Difference LTD Stirling Engine Metal Gear Transmission Heat Engine Model Features:LTD S...

ENJOMOR Plane Head Stirling Engine Pocket Free-piston Motor External Combustion Engine Model ToyFeatures:Science Education Toys: This stirling engi...

ENJOMOR γ-Type Hot-air Stirling Engine External Combustion Model LED Lights Voltage Digital Display Meter Generator Model ToyFeatures:Science Educa...

ENJOMOR Gamma Hot Air Stirling Engine External Combustion Engine Model with LED LightFeatures:.With unique design and simple structure, the model i...

ENJOMOR Balance Twin Cylinder Hot Air Stirling Engine External Combustion Engine ModelFeatures:.Science Educational Toy: Stirling engine is an exte...

ENJOMOR DIY Assembly Kit Gamma Stirling Engine Generator Model with LED Lights Science & Education Toy Gifts for Technology EnthusiastsFeatures...

ENJOMOR Balance Hot Air Stirling Engine External Combustion Engine Model with LED Bulb Science & Technology Educational Toy GiftFeatures:.Scien...

ENJOMOR Gamma Hot Air Stirling Engine Generator Model with LED Lights Science & Technology Educational Toys Gifts Features:Science & Educat...

Thresher that Works - Full Metal Threshing Machine Model Kit - TECHING DM605 Farm Machine Educational Collection 123Pcs What's A Thresher?Thresher,...

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3D Puzzle DIY Model Kit Jigsaw Metal Scorpion King Mechanical Assembly Crafts-200PCS+More Details:Design Story: We have been figuring out how to m...

Tiger Wing 3D Metal Model Kit Accessories for Bengal Tiger, Saber-toothed Tiger Features:.The beautiful wings is suitable for Bengal tiger and Sabe...