Table Clamp, Compatible Table Hole Size 1 1/8 in, Compatible With Welding Table, Features Heat , Tempered Profiled Rail and Drop Forged Sliding Arm for Strength, Tempered Spindle Particularly Sturdy and Wear-, Holding Capacity 1,400 lb, Includes MorPad, Maximum Jaw Opening 12 in, Outside Diameter 1.1 in, Overall Depth 1.7 in, Overall Height 1.7 in, Overall Width 2.4 in, Product Type Welding Table Clamp, Thread Size 1-1/8 In.