6", Drop Forged, C-Clamp, Designed For Light General Purpose & DIY Projects, Drop Forged Frame With Bright Galvanized Finish, Swivel Pad Moves Freely To Adapt To Various Surfaces, Cold Drawn Steel Spindle With Smoothly Rolled Threads, Steel Sliding Tommy Bar For Use In Tight Spaces, Great For Light Duty Welding, Fabrication & Woodworking, 0-6" Clamping Capacity, 3" Throat Depth, 1800 LB Clamping Force.