This is a pair of very nice, clean, 2-1/2"; capacity C-Clamps, marked "BRINK & COTTON 142-1/2". This pair is in very good condition with very little wear noted, and little sign of use. No damage, no rust, clean. This single clamp weighs 9 ounces, and has an 4.5" long frame and the thickness at the clamp pad is 5", and the threaded screw is .37" diameter. The reach clearance is 2.37 from center of the thread rod. A very well made tool, by a well known tool maker!