Profax WPC-20 20-inch Welding Positioner Chuck The Profax WPC-20 Welding Positioner Chuck will put your positioner a step above the rest. Made to handle medium to heavy duty pieces, this chuck will work for almost any job. Order one today and make your positioning processes a whole lot easier. Profax WPC-20 Welding Positioner Chuck Features: 3 jaw self centering Reversible jaws Easy mounting T-Handle wrench included with chucks Works with the Profax WP-1000, WP-2000 and WP-6000 Welding Positioners Profax WPC-20 Welding Positioner Chuck Specifications: Refer to image 2 for dimensions Diameter (D): 19 5/8 inches Clamping Range (A - A1): 1 - 11 inches I.D. Range (B - B1): 5 7/8 - 19 5/8 inches External Jaw Clamping Range (C - C1): 5 7/8 - 19 5/8 inches Weight: 258 lbs. Used On Profax Positioners: WP-1000 / WP-2000 / WP-6000