The Gear Package included: spindle, single/double crown gear, pulley, rack, bevel gear, copper gear, bushings, axles, tires, rubber bands and so on, more accessories that you need for diy robots/motors. Multi-uses, you can use it to fix the broken part, Great for diy science and small production, product design and mechanical model. Most gear is 2mm aperture (tight or loose), in addition to two spindle hole are 2.3mm and 3.17mm. 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 60 kinds of gear parts. It can meet your DIY needs.
