Plastic Diy Robot Gear Kit Gearbox Motor Gear Set (78 Pcs)

The 78Pcs Plastic Gear Set for all kinds of DIY cars, robots, model making accessories. 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 pulley, rack, four-wheel drive teeth, 28 teeth 2mm fan teeth, there are 30-100mm axles, 30mm diameter wheel wheel five wheels! Axle: the length is 30mm, 50mm, 70mm, 100mm and the diameter is 2mm (2pcs of each size). Five wheels: the outer diameter is 30mm and bore size is 2mm (4pcs). Gears are mostly 2mm aperture (tight or loose), in addition to a 81.5A spindle hole is 1.5mm, there are two crown is 2.5mm, there is a crown gear C303A is 3mm, a 15 teeth 2.3mm hole and 3.17mm hole.