For sale is a Pair of Super Heavy Duty C-Clamps. 6-1/2" Maximum opening. 3-1/2" Depth of throat (face of C-frame to center of clamping screw). 12" X 8" Overall size (less screws and handles). Both are marked "Made in USA". 40 Pounds approximate net weight of the pair. These (2) C-clamps will ship in a single USPS large flat rate box.