Shimano's polymer coating looks like a series of tubes wrapped around the cable. This means less surface area rubbing the internal housing liner, and it holds grease longer. The polymer-coated inner cable reduces the sliding resistance to achieve lighter and quicker operation. Shimanos' most advanced shift cable. Designed for ultimate performance Details: Length: 2100mm, 2500mm Diameter: 1.2mm Cable Type: Shifter Cable head type: Shimano/SRAM Material: Stainless Steel End cap included Compatibility: The Shimano Polymer Coated Derailleur Cable is compatible with the following: Shimano and SRAM MTB drivetrains