32T/34T/36T 8/9/10/11 Speed Chain Ring Wheel with 104BCD Crankset and Hollow Screw Threaded Bottom Bracket BBMade of high quality aluminum alloy material high strength, rustproof, solid but -light.Snail single speed narrow wide teeth chainring, BCD: 104mm; Crank Arm Length: 170mm; BB: 99.7x24mmHollow bottom bracket sprocket wheel shaft for single chain mountain bikes, road, folding bikes.Comes with 32T/34T/36T 8-11 speed chainring chainwheel.Specification:Material: Aluminum AlloyBCD: 104mmCrank Arm Length: 170mmAxis Diameter: 24mmBottom Bracket: 99.7x24mmPackage Includes:1 Set Bike Crankset with ChainringNote:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 1-3mm differences due to manual measurement.