3D Wooden Mechanical Orrery Solar System Model Kit, DIY STEM Educational Desktop Display (413PCS) Features: Precision Gear Transmission System:  Bu...

3D Metal Mechanical Jellyfish Model Kit – DIY Steampunk Assembly with USB Warm Light Desk Lamp for Desktop Display (800+PCS) Features: Deep-Sea Mee...

Neon Gas Glow Ring Reactor Plasma Sphere – Interactive Science Desk Toy Features: Magnetic Field Excitation Technology:  Uses magnetic field excita...

Glow Tesla Coil High Voltage Ion Experiment, Desktop Electric Display with Audio Input Features: Fully Assembled Structure:  Fully assembled struct...

65W High Power Micro Generator + Rectifier Bridge + Voltage Regulator + Mounting Bracket DIY Modified Power Generation Kit for CISON V8 Engine Mode...

ENJOMOR 3D Printed Inline Four-Cylinder Engine Model Kit, Electric Mechanical Assembly, Simulated Internal Combustion Engine STEM Science Display, ...

ENJOMOR 3D Printed Radial Five-Cylinder Engine Model Kit, Mechanical DIY Assembly STEM Aviation Engine Display with LED Light Effect, Creative Desk...

RW-BL1K Mini Reversible Reciprocating Single-Cylinder Live Steam Engine Kit with Boiler DIY Kit for Steam Boat Collectors Flash Deals Info.:...

Mechanical Adjustable Torque Wrench Tools Set (14PCS) Features: Exquisite Design:  The convenient, smart and labor-saving precision torque wrench s...

3D Stainless Steel Mechanical Unicorn DIY Assembly Model Kit, Desktop Decoration Gift for Adults and Collectors Features: Mythical Styling with Mec...

3D Metal Mechanical Deer DIY Assembly Model Kit, Futuristic Desktop for Adults and Collectors Features: Futuristic Deer Sculpture Design:  Combines...