Strong Hand Tools Sliding Arm Clamp - 8.5in, Model# UM85P Economical 4-in-1 Clamp adapts to serve four different functions: 1) Standard clamping 2) Pipe clamping 3) Spreader clamping 4) Step-over clamping Removable / reversible clamp arm Threaded hole in the jaw allows for the addition of the unique V-Pad and Extender Block accessories 1 Clamp . . . 4 Functions! For standard clamping, the 4-in-1 Clamp is 10X faster than a C-clamp!