The Bottom Bracket + Lockring Tool is a beautiful cast and hardened CRV tool steel tool that's made to last. It combines a long-levered bottom bracket tool at one end with a precision cassette lockring tool at the other. The lockring tool is made to fit both 12mm standard and 15mm oversize lockrings, while the bottom bracket tool delivers excellent traction, thanks to its long stem, and is made to fit Shimano and SRAM bottom brackets. The tool thus offers three separate functions, saving valuable space in your home, professional or portable race-day toolkit.   Features A legacy tool made from cast and hardened, bead-blasted CRV tool steel.. Displays matt finish.. With long-levered Shimano and SRAM bottom bracket tool (16 notch, 44mm).. Precision cassette lockring tool fits Shimano, SRAM, SunRace, Chris King lockrings (12 spline, 23.4mm).. Fits most 12mm Shimano and SRAM centrelock disc brake lockrings.. Fits 15mm Shimano disc brake lockring.. With clearance for 12mm thru-axles and drive side quick release nuts, thanks to oversized bore..