Mounts easily with one screw or bolt or with industrial adhesive. Great for mounting fishing rods, wire bundles, small flashlights hand tools, brooms, and poles. Can also be used to mount objects to a pipe or round tubing. Holds objects from 5/8-inches to 1-3/8-inches (16 to 32 millimeters) in diameter. Each clamp supports a safe working load of 25 pounds (11 kilos). 2 clamps support 50 pounds (23 kilos). Mounts easily with one #10 bolt. Mounting area: 1-1/2-inches x 1-1/2-inches (38 x 38 millimeters). The mini Quick Fist clamps are great as pipe stand-offs but do not use on pipes whose temperature consistently exceeds 180 degrees F (or 82 degrees C). WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.