Compatible with all 10-speed systems Includes MissingLink connector Perfect gear shifting thanks to the Double X-Bridge Item no.: BX10NB122 Size: 1/2 X 11/128 Color: Nickel Silver/Black Pin length: 5.88 mm Weight per 110 cells: 282 g Length: 122 links X-Series Your bike deserves it. The KMC X series is designed with the specific characteristics of Shimano, SRAM, and Campagnolo systems in mind, meeting the most demanding requirements. Carefully designed and manufactured, X-Bridge technology, thanks to precisely chamfered plates, enables smooth drivetrains and perfect gear shifting in every riding situation. The X series is trusted by many top athletes in professional cycling.