This is the shimano road brake ptfe coated inner wire 2050mm ptfe coated stainless steel inner brake cable for the ultimate in smooth braking performance designed to complement the top of the range shimano dura ace brakeset stainless steel ptfe coated precision ground round inner wires offer smooth low friction braking action with increased service life due to its anti corrosion nature suitable for front or rear brakes just cut to fit use with slr brake cable outer