NOVA 8303 Infinity Accessory Jaw - Bowl Jaw Series #3 Standard Infinity Chuck Jaw designed to hold medium bowls, plates & platters External dovetail to grip internal bowl recess. Internal dovetail to grip bowl foot. Able to grip round dowels. Capacity overlaps #2&#4 Bowl Jaws Stronger jaw design, over 15% thicker base, 130% wider jaw face than traditional Nova JS50N Jaws for max stability & rigidity 20% more external dovetail recess depth compared to traditional Nova JS50N Jaws means more useable grip available Larger grip capacity than traditional standard Nova JS50N Jaws