Complete polymer gear cable set designed to suit Ultegra 6800 gearsFitting new gears or completely overhauling your gear cabling couldn't be easier - everything you need in one packIncludes 1.2 mm Polymer spiral wrapped inner wires (1 x 2100 mm, 1 x 1800 mm), and SP41 outer casing for a complete bike (1 x 1700 mm), and all end capsPolymer wrapped stainless steel inner wire leaves a smooth surface for low friction and reduced sliding resistance providing a lighter quicker shifting operationOuter casing is lubricated internally along its length with low-friction silicone grease to reduce cable frictionSP 41 outer casing uses a special directional wound construction process makes for an axially stiff cable that transmits shifting movements accurately and quicklyOuter casing is lined with a polymer sheath to assist with the smooth operation of the inner wire