The KMC X-Series has been designed with the specific characteristics of the Shimano and Campagnolo systems in mind and will meet the most demanding requirements. Elaborately designed and manufactured the X-Bridge technology thanks to precisely chamfered plates allows a smooth propulsion and perfect gear changes in all driving situations.Compatible with Shimano and Campagnolo 12-speed systemsNot Compatible with SRAM eTAP and Flattop 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;} Links 126 Drivetrain Speeds 12 Chain Connection Type Single Use Master Link Color Silver Weight 268 Half Link Chain No Defined Color Silver