100% brand new and high quality 60 different kinds of parts and accessories in just one package, which makes it a perfect choice for laboratories, science education, DIY models, RC-airplane/helicopter repair, etc. This item is for toys gear spare parts package, mainly for 0.5 modulus of each gear for DIY toys with use. Our product includes gear, rack, pulleys, belts, and other transmission parts, and all the display pictures were taken in kind. Specification: Do DIY science and small production, product design, mechanical model Material: Plastic Color: White Quantity:1 Set, (60pcs) Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: Single gear:8 kinds , the largest model 482A Spindle gear:9 kinds , the largest model 142A Double gear:12 kinds , the largest model 46082A Crown gear: 9 kinds , the largest model C323A Pulleys:7 kinds , the largest model 242A Blue motor gear:2 kinds Belt:4 kinds Sleeve:4 kinds Worm:2 kinds Rack:1 kind Copper teeth:1 kind Bevel:1 kind