Universal bottom bracket drift is designed to press all current Wheels Mfg bottom bracket cups in to your frame The adapter is machined with multiple steps to fit common bottom bracket shell and bearing diameters Each step is laser etched with the diameter size Compatible with any press with a 1/2` diameter rod Machined aluminum , anodized red Bearing Press Red 1/2` Rod BB-OBUPC/EAN/GTIN: 811079023087