The body-only version of our Basic Oneway scroll chuck kit (without jaws, woodworm screw or taper-lock adapter). Lever operated with a nickel-plated body weighing 4 lb, case-hardened base jaws and a scroll coated with a dry, long-lasting lubricant. Precisely made, the chuck body typically has less than 0.001" of runout; with the jaws mounted, runout can be expected to be less than 0.005.