NOVA 8311 Infinity Accessory Jaw - Saw Tooth Series #1 Infinity Saw Tooth Chuck Jaw designed for aggressive holding of spigot (tendon) turnings like goblets, hollow form vases & urns Saw Tooth jaw best profile for a solid grip on spigot. Capacity overlaps with #2 Saw Tooth Jaws Ideal for delicate, small diameter long stem turning with minimum vibration. Both internal & external saw tooth grip available Strongest holding for small & long stem work than any jaw in the Nova Traditional or Infinity range Also has external/internal dovetail to mount bowls to provide extension away from chuck face so inside/outside of small bowl can be turned