The size of the top portion of the clip is 1.25X1.75. The jaws opening is 0.5 inches and jaws are strong enough to hold the heavy load of rugs. The top portion locks the jaw. Its back portion has a hole inside to screw it over a rectangular rod of 1X1 inch. It can be screwed into the ceiling as well.
Its’ alligator jaws offer strong grip to the heavy rugs, carpets and quilts. A 5X7 feet rug may require 4 to 6 clips depending upon the weight of the rug.