Quick Fist clamp is ideal for stowing or transporting tools, hoses, trouble lights, boat hooks, or any object with 1/2" to 2-1/2" diameter. Use multiple Quick Fists to mount larger tools, such as jacks. Can also be used as a pipe stand-off (with the exception of exhaust pipes). Can be mounted with strap facing any direction. Mounts easily with one #10 (5 mm) bolt or screw (not included). Each clamp supports approximately 22 lbs. Mounting base measures 7/8" x 2-3/4".