uxcell GA/GB 37mm diameter DC Geared Motor Mounting Bracket Holder 6mm Hex Coupling

Product Review

Quimat 78 PCS Plastic Gear Kit is most complete for DIY car robot. A great choice for kids to improve their creative and practical ability.

The most complete 78 PCS (71kinds) for DIY Car Robot Project, which always meets different requirement.
Package includes main shaft gear, single/double gear, crown gear, pulley, rack, bevel gear, copper gear, bushing, axle, tire, rubber band, etc.
The most distinctive gear is: 36mm Yellow 2mm Hole Belt Pulley, Rack, Four-wheel Drive Teeth, 28 Punched Holes 2mm Fan Teeth, 30-100mm Axles, 30mm Diameter Five Hub Wheels.
Axle: the length is 30mm, 50mm, 70mm, 100mm and the diameter is 2mm (2pcs of each size). Five hub wheels: the outer diameter is 30mm and bore size is 2mm (4pcs).
The aperture of Most gears are 2mm(tight or loose), in addition to a 81. 5A spindle hole is 1. 5mm, two crown is 2. 5mm, a crown gear C303A is 3mm, a 15 teeth 2. 3mm hole and 3. 17mm hole.