The plastic DIY gears kits are for toys gear spare parts package, many uses, fun to use and learn.
It includes worm gears,crown gears and a couple of other gears, suitable for DIY model production technology.
This is the most complete gear set, includes 84 kinds of gear parts. It can meet your DIY needs.
Belt Wheel: 40pcs
1 x 84 Pcs Plastic Robot Gear Set (The car body does not includes)
Please pay attention to the size before you buy it.