Product description<br> <br> Crank: 170 mm.<br> <br> Material: aluminium alloy AL6061<br> <br> Specifications: BCD 104mm, Approved Hole Spacing: 74mm<br> <br> Weight: approx. 637 g.<br> <br> Color: Black, Red, Blue, Gold, Silver, Green, Purple, Colorful<br> <br> Advantages: use aluminium alloy AL6061, light weight, appearance and fashion, very cool, axial strength, strong compatibility.<br> <br> Please note:<br> <br> 1. Please allow 1-3 cm error due to manual measurement (1 inch = 2.54 cm).<br> <br> 2. The item colour displayed in photos may be slightly different on your computer monitor than on your monitors. Thank you for your understanding.<br> <br> Package includes:<br> <br> 1 x a forged crank set.<br> <br> 4 x chain ring screws (set).<br> <br> 1 x M15 crank screw.<br> <br> 1 x Allen screw