Reversible hard jaws from Dillon Manufacturing are suitable for I.D. and O.D. workholding, so they accurately grip and locate work pieces, while significantly reducing set up times. Designed to hold a specific range of part sizes, they are designed for first operation workholding. They fit all brands of chucks including serrated, Acme Key, square key, and tongue-and-groove styles. Single or two-step jaws feature diamond shaped serrations to provide secure gripping and accurate parts locating. Manufactured of 8620 case hardened steel, ground locating surfaces and black oxide coating offer corrosion resistance. Dillon also offers custom made special or modified hard jaws with industry-leading turnaround times. Dillon Manufacturing Inc. manufactures a complete line of standard and custom workholding solutions including chuck jaws, chucks, vises jaws, soft jaws, hard jaws, collet pad jaw systems, chuck lubrication, and more. All products are made in the USA and Dillon is ISO 9000:2015 registered.