Rebuild Vise shaft /Rod holde Shaft clamp kit 18 sizes 7.4mm-19mm For foxThese clamps are CNC machined out of 6061 aluminum for a tight tolerance fit, we generally only have about . 003 of clearance for better holding power. This is clamp is a must for fork and shock rebuilds. This clamp fits tons of FOX , Rockshox, Manitou, DVO forks and rear shocks.. Please see that it fits your application. These are . 620thick Aluminum is superior to the plastic versions in that it has better holding power (plastic ones struggle to