NOVA 8100 Infinity Upgrade Jaw Slides Kit for Chucks Upgrade existing 2004 or later Precision Midi, NOVA G3 and SuperNOVA2 Chucks Allows quick change (under 30 seconds) of Infinity Jaws or Infinity Retrofitted Jaws Forward Self Locking Cam Grip of Jaw Key Fits full range of NOVA Infinity Jaws and Infinity Retrofitted Nova Jaws Strong, 3x strength of machine grade steel