Material: PlasticColor: as shown in picProduct Description85 kinds Plastic gear rack pulley belt Worm gear Single-double-gear teeth common 85 kinds of gear bags, styles Plastic Gears Robot Part DIY for cars, planes models gadgetsBoth models, toys, cars, planes, remote control toys, all need to use gear, so many models, there will be always fit you!We are promoting DIY, beginning ability, idea!If your are parents, children like toys, like making gadgets, gear is indispensable, so many kinds, there must one match! Let your baby DIY...If you are a model enthusiasts, the gear is indispensable, I believe you will know. The aircraft, cars, boats, small production of science and technology, they all need gear!The strength of the gear is infinite, Any mechanical need gear in his world. Let's make some Design and invention! FeaturesSector gear 4PCS:12T 15T 21T 28TWorm gear 3PCS:6-6 7-7 8-8Blue spindle gear 4PCS:D-Shaft 3MM 4MM Circular shaft 2.3MM 3.17MMCrown gear 14 PCSSingle gear 15 PCSDouble gear 19 PCSBelt pulley 4PCSAxle sleeve 3PCSTee collar 3PCSGear-B 1 PCBelt 3PCSSo on (All are in the pictures) Quantity: 1Set X 85Pcs Gear setNote:Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 1Set X 85PCS Gear set​