Feature: - 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. 32T-52T Specifications: Brand: SNAIL Size: 32/34/36/38/40/42/44/46/48/50/52T Bolt Center Diameter: 104mm BCD Material: 7075-T6 Aluminum alloy Type: Single-narrow and wide chainring Process: Full CNC machining process Shape: Round/Oval (Single Speed) Thickness: 4mm Weight: 41g(32t)/52g(34t)/55g(36t)/70g(38t)/75g(40t)/92g(42t) 30T Specifications: Brand: SNAIL Size: 30T Bolt Center Diameter: 104mm BCD Material: 7075-T6 Aluminium Alloy,superlight Compatib.