Double-ended bottom bracket wrench designed to fit 16-notch bearing cups with an outside diameter of 44mm or 48.5mmCompatible with all current Wheels Mfg bottom brackets with notched cupsMachined aluminum, anodized redBottom Bracket WrenchRed16-Notch44mm/48.5mmWRENCH-BB48-44Wheels ManufacturingUPC/EAN/GTIN: 811079023759