170mm Mountain Bike Crankset, Hollow Integrated Crankset 32T-52T Black/Red Aluminum Alloy Bike Crankset with 104BCD Round Oval Chainring, Replacement for Bicycle Crank Arm Set Description Meteorolite focuses on cycling and hopes to provide a safe and comfortable cycling trip for every customer who comes into the store to buy products. Mountain Bike Crankset: Material: aluminum alloy Length: 170mm Color: black/red BCD: 104mm Compatible: 8/9/10/11/12 speed Single Speed Chainring: Material: aluminum alloy Teeth: 32T/34T/36T/38T BCD: 104mm Color: black/red Threaded Bottom Bracket: Material: main aluminum alloy Inside Diameter: 24mm Suitable for Frame: 68-73mm Features & details 【High Grade Crankset】The surface of mountain bike crankset is frosted and anodized, and at the same time, the density of the aluminum alloy in the threaded part of the crank arm is increased, which effectively protects the crank and prolongs the use time. 【Crankset Size】High-quality aluminum alloy hollow integrated crankset, crank arm length is 170mm, suitable for 104BCD 64BCD round chainring and 9/16" pedals. 【BCD104 Chainring】The alternate design of narrow and wide teeth can effectively prevent the chain from falling off. 32T/34T/36T/38T round black red chainring are available in a variety of options to meet various needs. 【Compatible】Suitable for most of 8s/9s/10s/11s/12s mountain bike, road bike. 【Package Include】:1PC bike crankset , 1PC bottom bracket, 1PC round chainring, 4PCS Chainring b