Available for 5, 6, 8, 10, and 12 in. power chucks, Dillon jaw forming ring promotes uniform grip on workpiece to maximize jaw life for cutting and forming operations. This tool, mounted in direct contact with top jaw, preloads chucking system and extends jaw life for requalifying or reforming by lessening amount of jaw stock removal required during parts setup. Capable of range of OD and ID jaw formation, ring features self-centering action that provides equal pressure on all jaws.