Includes 1.2 mm Polymer coated inner wires (1 x 2100 mm, 1 x 1800 mm), OT-RS900 outer casing (1 x 240 mm) and OT-SP41 outer casing (1 x 1700 mm), and all end capsPolymer coated 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 frictionOT-RS900 outer casing has added compliance to allow for new road Shadow mech design requirements SP 41 outer casing uses a special directional wound construction process makes for an axially stiff cable 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