ITEM NAME:75 Kinds Plastic Shaft Single Double Reduction Crown Worm Gear Kit For Robot DIY 100% brand new and high quality 75pcs of gear can match each other, all combined into gears, these gears are suitable for shaft Containing worm, straight teeth, shaft gear, the tooth crown, the double reduction gear Do DIY science and small production, product design, mechanical model Color: White Quantity:1 Set (75pcs) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Spindle straight tooth : 9 kinds (each one) Crown gear: 11 kinds (each one) Single gear: 12 kinds (each one) Double gear: 19 kinds (each one) Belt pulley: 7 kinds (each one) Worm: 2 kinds (each one) Connecting rack: 2x Axle sleeve: 6x Tee collar: 1x Gear-B: 1x Belt: 5 kinds (each one).Containing worm, straight teeth, shaft gear, the tooth crown, the double reduction gear. Worm: 2 kinds (each one). Spindle straight tooth : 9 kinds (each one). Crown gear: 11 kinds (each one). 75pcs of gear can match each other, all combined into gears, these gears are suitable for shaft.