Our universal bottom bracket frame 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 inside diameters each step is laser etched with the diameter size.Inner hole sized to fit 1/2" threaded rod. Not for use with our PRESS-1 or PRESS-4 Compatible with any other press with a 1/2" diameter rodRecommended for use with Wheels Mfg BP0006 BP0007Machined aluminumAnodized RedSold individually