Rock Steady Clamp Base: Mount your camera to any frame, round tubing, handle, or gear leg. This all metal base clamps around any tubing 1/2" - 1" diameter. Includes thumb screws with hex drives to be installed by hand or with a hex wrench. The aluminum block has countless configurations, such as with a U-bolt clamp for installs with tight clearances, with longer bolts for wide reaches, or simply bolted to a flat surface. This clamp base is compatible with all Rock Steady mounts.