These machined solid aluminum plates mount to the Oneway Stronghold Chuck (#30589, sold separately), and they have a unique combination of slots and tapped holes that accept rubber grippers for holding an infinite number of round, oval or square shapes.
Notice: If your lathe has less than a 16" swing, the Oneway Talon Chuck (#20761, sold separately) is recommended. Stronghold Chuck jaws are NOT compatible with either the original Oneway Chuck or the Talon Chuck.