Polymer-coated stainless cables introduced with the DuraAce 9000 series, achieves lighter and quicker shifting with the reduced sliding resistance Polymer-coated inner cable reduces the sliding resistance to achieve lighter and quicker operation Low friction polymer material on the cable may cause slippage at the cable fixing bolt after initial pre-stretch for the cable is performed. Fur like material from polymer coating will not affect the performance Approved by Shimano only for use only with Dura-Ace FD/RD-9000, FD/RD-7900, Ultegra FD/RD-6800/6700, 105 FD/RD-5700, XTR FD/RD-M980 & XT FD/RD-M780 Length: choose; 2100mm standard, or 2500mm extra long Width: 1.2 mm Unit of Sale: Each