Fitting new gears or completely overhauling your gear cabling couldnt be easier with the shimano dura ace ptfe gear cable set its everything you need in one pack complete top of the range gear cable set designed to suit dura ace 7900 and ultegra 6700 gears die extruded ptfe coated inner wire leaves a smooth surface for low friction in use and stainless steel provides smooth shifting and higher corrosion resistance with an outer casing lubricated internally along its length with low frictio