Feature: - Fit for MTB Bike,XC/Off Road/AM bike modified single chainring. - Fit 10 speed shimano sram chain,Fit SRAM/FSA/Prowheel 64/104bcd crank. - Precision machining and anodic oxidation electroplating - Better after-sales service,we will reply you within 24 hours! - Ship in 0-1 day and reach the delivery within 1-3 working days generally. Chainring Description: Brand: SNAIL Material: 7075-T6 Aluminum alloy Size: 30T,32T,34T,36T,38T,40T,42T Type: Single-narrow and wide chainring Bolt Center Diameter: 104mm BCD Thickness: 4mm Shape: Round/Oval Weight: 38g(30t)/41g(32t)/52g(34t)/55g(36t)/70g(38t)/75g(40t)/92g(42t) Package included: 1 PCS*Chairning Bolts description: Brand: Litepro Material: AL7075 Aluminum alloy Specification: 6.5mm Weight: 1.5g/pc,approx Package included: 4 PCS*Chai.