Black snake is a waterproof low friction system with quality dupont telfon coated wires the quality of the teflon coating reduces friction to 002 compared with 005 with a standard steel wire its easy to fit and will not not fray self lubricating thus maintenance free fits both mtb and road bikes contents double ended 2 teflon cables 1700mm 1 teflon casing 1800mm 10 self locking casing end caps 4 zamak cable end caps 1 black snake sticker 1 explosive sticker installation