The Shimano Dura Ace 9000 Road Gear Cable Set is a Complete top-of-the-range gear cable set designed to suit Dura-Ace 9000 gears. With the Dura Ace 9000 you have everything you need in one pack fitting new gears or completely overhauling your gear cabling couldn't be easier! The Shimano polymer coated stainless steel inner wire leaves a smooth surface for low friction and reduced sliding resistance providing a lighter quicker shifting operation and the outer casing is lubricated internally along its length with low-friction silicone grease to reduce cable friction This gear cable set has a SP 41 outer casing that uses a special directional wound construction process makes for an axially stiff cable that transmits shifting movements accurately and quickly, and the outer casing is lined with a polymer sheath to assist with the smooth operation of the inner wire. Shimano Dura Ace 9000 Road Gear Cable Set Features Complete top-of-the-range gear cable set designed to suit Dura-Ace 9000 gears Includes: 1.2 mm Polymer coated inner wires (1 x 2100 mm, 1 x 1800 mm) Includes: SP41 outer casing for a complete bike (1 x 1700 mm) Includes: all end caps Polymer coated stainless steel inner wire Outer casing is lubricated internally along its length with low-friction silicone grease SP 41 outer casing uses a special directional wound construction process Outer casing is lined with a polymer sheath