Get the most out of your bike with the PROWHEEL 170mm silver aluminum crank. Made of 6061-T6 forged aluminium, it is resistant and light, ideal for MTB, road, city, cyclocross and trekking/touring. Enjoy an easy installation thanks to its square axis. RECOMMENDED USE: MTB HIGHWAY CITY CYCLOCROSS TREKKING/ TOURING CRANK LENGTH (MM): 170 CONNECTING ROD MATERIAL: FORGED 6061-T6 ALUMINUM