For clamping different materials for the optionally three different clamping inserts are available. The use of teeth results in a high surface pressure whereby maximum holding forces are achieved. In the case of wear of the Mastergrip clamping claws these can be easily replaced. At the same time, the jaw has a smooth side for clamping machined surfaces.
Steel serrated soft jaws to suit a 12 Inch power chuck. Jaws are manufactured from 080M15 Steel. Good Quality of of material allows for machining with a good finish.