This 140mm 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 clamping range is between 44.5mm and 117.5mm. Includes T-handled wrenche, wood screw point, and machined chuck lever. Works great with the other optional jaws, which are available for additional clamping options.