Designed to complement the top-of-the-range Shimano Dura-Ace and XTR groupsetsPolymer-coated inner wires offer smooth low friction shift action with increased service life due to its anti-corrosion natureFor use with 4 mm outer casing (e.g. SIS-SP41)Suitable for front or rear mechs, just cut to fit1.2 mm x 2100 mm