Description: - Made of high quality materials, durable and practical - Electric 36T clutch - clean and sre - Shape:Spur Specification: - colour:Silver and white - Material:nylon Size Chart: Outer diameter: : 124mm Clutch diameter: 88mm Gear: 36T diameter :47.5mm Sun number :18T Package Includes: 3x wheel 1x gear 1x clutch Note: 1. Please allow slightly error due manual measurement. 2. Due between different monirs, the picture may not reflect the actual the item. 3 shopping!