The Dia-Compe Brake Cable "Lucky Bolt" is like the swiss army knife of cable ends. Functions as an Anchor Bolt, Knarp and a cable end. It can replace the lever knarp of an upper gyro cable allowing you to shorten the single cable of an upper gyro. It can also be used as a cable anchor on a U-brake with a regular straddle cable, or use two of them with a London Mod. Sold individuality.