The Bottom Bracket Socket Retaining Tool is designed for use with 1/2" drive aluminum bottom bracket sockets. The tool features a robust metal 1/2" adapter that securely grips the socket. The adapter is threaded to allow attachment of a screw rod with a spring tension system. This system generates constant tension, keeping the bottom bracket socket firmly and fully in place during use.Compatible with all aluminum 1/2" bottom bracket socketsImproves the grip of bottom bracket sockets on low-profile bottom bracket cupsUnior Article Number: 737378 EAN Code: 3838909296128