This 4-Jaw, Self-Centering Chuck with dovetailed jaws is great for small bowl and plate turning and features jaws that grip by clamping around the workpiece or expanding to fit a turned recess. The minimum diameter required for clamping around the workpiece is 1-1/4" and the minimum diameter required for expansion is 1-13/16". Includes T-handled wrenches, wood screw point and machined chuck lever. Compact design is ideal for smaller lathes.