34 Kinds of Plastic Pinion Gear Rack Pulley Belt Reducer Worm Gear Kit

34 different kinds of parts and accessories in just one package, which makes it a perfect choice for laboratories, science education, DIY models, RC-airplane/helicopter repair, etc.
Our product includes gear, rack, pulleys, belts, and other transmission parts, and all the display pictures were taken in kind.

Features:
– Do DIY science and small production, product design, mechanical model
– Material: Plastic
– Color: White
– Quantity: 1 Set, 34 kinds (41pcs)

Package Includes:
1 Set x Gear Kits with 34 kinds (41pcs)
– gear, rack, pulley, belt, Worm gear, Single & double-gear, 8-56 teeth