Complete gear cable set designed to suit the top-of-the-range XTR gearsFitting new gears or completely overhauling your gear cabling couldn't be easier - everything you need in one packIncludes 1.2 mm inner wires (1 x 2100 mm, 1 x1800 mm),and black 4 mm SP41 outer casing for a complete bike (1 x 3000 mm), and sealed outer caps with added tongue for rubber shields plus inner end capsSIL-TEC coated stainless steel precision ground round inner wire leaves a smooth surface for low friction while providing high corrosion resistanceOuter casing is lubricated internally along its length with low-friction silicone grease to reduce cable frictionSpecial construction process makes for an axially stiff outer casing that transmits shifting movements accurately and quicklyOuter casing is lined with a polymer sheath to assist with the smooth operation of the inner wire