GIFTS FOR HIM stem123

Low Temperature Difference LTD Stirling Engine Model Coffee Powered Gadget Features:.LTD Stirling Engine: The dreamlike intelligent engine is mainl...

Stirling Engine 2-cylinder Parallel Metal Bootable Model Micro External Combustion Engine Model Features:.100% brand new and high quality.The whole...

ENJOMOR Hot Air Stirling Engine External Combustion Engine Electric Generator Model STEM Science Educational ToyFeatures:.With innovative design co...

High-end Precision All-metal Four-cylinder Stirling Engine Model Assembled Movable Metal Mechanical Engine Features: .The appearance is exquisit...

Stirling γ-shape Hot-air External Combustion Engine Model with LED and Lamp Physics Science Experiment ToyFeatures:.Science Education Toy: Novel de...

Vacuum Stirling Engine Model Flame Licker with Skeleton Windshield Science Experiment Teaching Collection Features:Creative Engine Model: This Stir...

γ-shape Single Cylinder Stirling Engine Model with Twin Flywheel Science Experiment Teaching Collection Features:Exquisite Decoration Model: This i...

Custom 16-Cylinder Swash Plate Stirling Engine Generator Model with Voltage Digital Display Meter and LED Features: .16-Cylinder Swash Plate Stir...

Power Cylinder Components Connecting Rod Piston with Glass Cylinder for Stirling Engine Model Specifications:Material: Metal + GlassProduct Weight:...

Hot Cylinder Components Connecting Rod Piston with Glass Cylinder for Stirling Engine Model Specifications:Material: Metal + GlassProduct Weight: 2...

Specular Highlight Squirrel Shaped Hot Air Stirling Engine Generator Engine Model Educational Toy with LED Features:   .Stirling Engine: It featur...

Mini Balance Type Stirling Engine Model with Quartz Hot Cylinder and Base - Golden Features:Beautiful Appearance: The body is made of fine metal po...

Metal Single Cylinder Stirling Engine Mini Generator Model with Base Physical Experiment Toy Creative Gift Features:Exquisite Model: The overall st...

Features: .The V6 electromagnetic engine model has an exquisite appearance, mini domineering, highly simulated, strong magnetic power, brushless E...

Features: .The flame eater Stirling engine does not need to warm up, and it can run stably for a long time with strong power .The surface is treat...

ENJOMOR 2 Cylinder Stirling Engine Model Generator Model with Voltage Meter and LED Lamp Bead - STEM Toy Stirling Engine: Dual heating cylinders + ...

Features: .Cool Appearance: The windmill has a novel shape, length and width: 17*12*22cm. The front end has a red windmill that rotates quickly du...

Random Color of Bulb Features: .Exquisite Appearance: The appearance is exquisite and generous, the surface is polished and smooth, the color is b...

V6 Electromagnetic Engine 12V Electromagnetic Motor DIY Runnable Generator for Science Project - EnginediyThe Electromagnetic Engine will replace t...

Stirling engine single-cylinder split right angle type Stirling engine model is great for gift collection. The Stirling engine model is powered by ...

Stirling Engine DIY Manson Engine Model Set with Metal Baseplate Toy for Children The Stirling engine kit is powered by the expansion of the gas a...

Brushless DC Motor 5000-10000 RPM Disc Motor Model Science Toy - Enginediy A motor converts supplied electrical energy into mechanical energy. Var...

Magnetic levitation Brushless Hall Motor DIY Stem Toy - EnginediyMagnetic levitation motor is using super strong magnet and adding glass plate, the...

Features:Design Intention: This product is composed of 8 circuit boards and 8 coils, each coil corresponds to a circuit board, does not interfere w...