Quantity:64 pcs
Material: Plastic
Spindle teeth 10 pcs; Crown gear 11 pcs; Single-layer gear 12 pcs;
Double gear 19 pcs; Pulleys 8 PCS; Worm 2 kindsPCS;Three-way sleeve 1 pcs; Scattered teeth 1 pcs
It's suitable for DIY hobby,covering all kinds of gears, can also learn, you can also teach, but also DIY model toys Additional Details ------------------------------ Package quantity: 1