Small Tips: 1.This chainring fit for 8/9/10/11 speed chain, fit JIANKUN(IXF) crank and Shimano M370/M410/M610/M670/M780 crank (not fit M7000/M8000/9000). Fit SRAM/FSA/Prowheel 104bcd crank. 2.Please make sure your crank BCD specification is 104mm BCD before purchasing. 3.Our products are shipped from real UK warehouses, 0-1 days handling time,1-3 days delivery time,provide Premium Service,so that you will receive the product quickly. Chainring Description: Brand: SNAIL Material: 7075-T6 Aluminum alloy Size: 32T,34T,36T,38T,40T,42T,44T,46T,48T,50T,52T Compatibility: 8,9,10,11 speed chain Bolt Center Diameter: 104mm BCD Thickness: 4mm Shape: Round/Oval Weight: 41g(32t)/52g(34t)/55g(36t)/70g(38t)/75g(40t)/92g(42t) Fit for MTB Bike,XC/Off Road/AM bike modified single chainring.