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60PCS/Set Plastic Gear Set DIY Rack Pulley Belt Worm Gear Single Double Gears For Robot Motor DIY Tool Assorted SetSpecification:Contains almost all forms of tools combinations, meet your DIY requirementsContain: 60 styles Plastic Gear SETSingle gear: eight stylesSpindle gear: 9 stylesDouble gear: 12 stylesBelt wheel: 7 stylesCrown gear: 9 stylesBlue motor gear: 2 stylesBelt: 4 stylesSleeve: four stylesWorm: 2 stylesRack: 1 stylesCopper teeth: 1 stylesUmbrella teeth: 1 stylesMaterial: PlasticItem Pictures: