Gear inner wire. Compatible with all major manufacturers gear changers.All inner wires are supplied in generous lengths of 2275mm, long enough front and rear changers on all types of bikes. Available in Stainless Steel, PTFE coated and galvanised. PTFE provides the rider with quicker more accurate shifting as the inner wire is virtually friction free. PTFE coated wire supplied with black end caps Stainless Steel wire is corrosion resistant.