Profax WPC-16 16-inch Welding Positioner Chuck The Profax WPC-16 Welding Positioner Chuck is the most diverse chuck in the Profax line. This chuck works with three different welding positioners. Don't be left wishing you had the right tool, order it today and you'll be glad you did when it arrives. Profax WPC-16 Welding Positioner Chuck Features: 3 jaw self centering Reversible jaws Easy mounting T-Handle wrench included with chucks Works with the Profax WP-500, WP-1000, and WP-2000 Welding Positioners Profax WPC-16 Welding Positioner Chuck Specifications: Refer to image 2 for dimensions Diameter (D): 15 3/4 inches Clamping Range (A - A1): 5/8 - 8 1/4 inches I.D. Range (B - B1): 4 3/4 - 15 3/4 inches External Jaw Clamping Range (C - C1): 4 3/4 - 15 3/4 inches Weight: 166 lbs. Used On Profax Positioners: WP-500 / WP-1000 / WP-2000