Rear derailleur gear cable set designed to suit the top-of-the-range XTR gears,Fitting new gears or completely overhauling your gear cabling couldn\'t be easier - everything you need in one pack,Includes 1.2 mm inner wires (1 x 2100 mm), and black 4 mm SP41 outer casing for the rear derailleur (1 x 2000 mm), 4x sealed outer caps with added tongue with rubber shields, 1x plastic sealed caps, 1x Alloy sealed caps plus inner end caps,Polymer coated stainless steel precision ground round inner wire leaves a smooth surface for low friction while providing high corrosion resistance,Outer casing is lubricated internally along its length with low-friction silicone grease to reduce cable friction,Special construction process makes for an axially stiff outer casing that transmits shifting movements accurately and quickly,Outer casing is lined with a polymer sheath to assist with the smooth operation of the inner wire.