Provides a flat mounting surface for installing lights or other accessories. Aluminum construction with a black finish. Clamps feature rubber inserts that allow for additional adjustability in the mounting diameter and protect the finish of the tubing. Clamp sizes 0.75in. to 1.75in. ID feature a through-hole for M8 mounting hardware. Clamp sizes 2in. to 3in. ID feature a through-hole for M10 mounting hardware.