Product is suitable for retrofit folding bike, bicycle, electric bike. Lightweight, high axial strength and compatibility. Standard precision machining, ensures chain retention, increases service life and reduces friction. A replacement for bicycle repair and upgrade, compatible with many bicycle models. Crank length: 170MM Number of teeth: 46T Color: Black Material: Metal Package Contents: 2 x Cranks Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.