Original Quick Fist Clamp for mounting tools & equipment 1" - 2-1/4" diameter (Pack of 2) Holds objects 1-inch to 2-1/4-inches (25 to 57 millimeters) in diameter Each clamp supports 25 pounds (11 kilos) Not affected by hot or cold climates UV resistant; made of heavy duty transportation grade rubber Mounts easily with one #10 screw or bolt (not included)