Headtube drifts for use with the Wheels Mfg Headset Cup Press. 1/2" thru hole. Drift is machined with multiple steps to fit common head tube inner diameters listed below. Not recommended for use with Wheels Mfg PRESS-1 or PRESS-4handles and rod, which have a smaller 3/8" diameter rod.
We do not recommend it for use with our PRESS-1 or PRESS-4 handles, or any other press with a rod diameter less than 1/2". When used with a smaller rod, it is almost impossible to prevent the cups from pressing in straight.
Headtube drift fits the following Headtube Inner Diameters: