Fits SRAM 8-bolt DM cranksets (Designed with Title CR1 Cranks) Machined from solid 7075 T6 Aluminum Shimano HG 12 = Compatible with Shimano HG12 12-speed chains such as: XTR CN-M9100/M9200, XT CN-M8100/M8200, SLX CN-M7100/M7200 32T = 72g TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Model CR1 Shimano HG 12 Ring Type HG+ (Anti-Chain Drop) Mount 8-Bolt DM 3mm Offset Teeth 32 Oval/Round Round Color Chrome