The Gibraltar Medium 10.5mm L-Rod Ultra Adjust Tom Arm is a super adjustible tom arm that will position your tom exactly where you want it, quickly and securely. The Gibraltar SC-MEDUA has a 10.5mm diameter, 5 inch L-Rod and a 7/8" diameter down tube. Whether you are looking for a replacement part for your existing stand, or just adding on, you can't go wrong with Gibraltar Hardware. We carry the full line at the Drum Center of Portsmouth.