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Description: The product is for toys gear spare parts package The great tools for all kinds of DIY cars, robots, model making accessories Suitable for DIY model production technology This is the most complete gear set, includes 75 kinds of gear parts. It can meet your DIY needs Package includes: 1. Double Gear: 19 kinds 2. Single Gear: 12 kinds 3. Spindle Gear: 9 kinds 4. Crown Gear: 11 kinds 5. Worm Gear: 2 kinds 6. Bevel Gear: 1 kind 7. Belt Pulleys: 7 kinds 8. Axle Sleeve: 6 kinds 9. Connecting Rack: 2 kinds 10. Tee Collar: 1 kind 11. Belt: 5 kinds