At SCHUNK, you will find the largest offering of base jaws for all lathe chuck types. In addition to the jaw interface with tongue and groove, SCHUNK also offers hardened, precision ground base jaws for the use of fine-serrated top jaws. If seamless clamping is not possible with your jaw quick-change chuck equipped with claw jaws, such clamping gaps can be covered, for example, with base jaws featuring ½-tooth offset. The delivery unit comprises 1 set = 3 pieces , including cylindrical screws. With the exception of base jaws EWB-MT, which are supplied without cylindrical screws.