Tongue and Groove Step Jaws For clamping workpieces that must not be damaged. The clamping surface is grooved and not ribbed. This results in reducing the potential for marking components. The stepped jaw is hardened approx. 0.2 mm deep. The accuracy of the surface with respect to the serration is +/- 0.02 mm. For greater accuracy, the jaws must be ground in tension on the vice.Best Centric Vises
