Table Clamp, Compatible Table Hole Size 1 1/8 in, Compatible With Welding Table, Features Fixed Throat Depth, Sliding Arm, Tempered Profile, Holding Capacity 1,100 lb, Includes T-Bar, Maximum Jaw Opening 12 in, Outside Diameter 1.1 in, Overall Depth 16.9 in, Overall Height 16.9 in, Overall Width 1.6 in, Product Type Welding Table Clamp, Thread Size 1-1/8 In., Throat Depth 5 1/2 in, Work Surface Pattern Precision 5/8 in Hole in 2 in Grid Pattern, Process Clamping, Standards ACME