Bikeservice T-Handle Speed Ring Set 4pc BS1700Assists T Handle socket alignment and allows the T Handle shaft to rotate freely during removal and fitment of fasteners Increases the speed of T handle socket use and eliminates friction between the metal shaft and the operators hand during rotation 4 piece set conveniently locks and stores on the tool after use Suitable for 300mm T Handles Length: 80mm Internal dia.: 12. 7mm (1 2") Hole Diameter 12. 7mm (1 2") Length 80mm Suits 300mm T Handles