Gibraltar SC-BALRL Large Ball Arm 12.7Mm L-RodAdd serious flexibility to your tom mount setup with a Gibraltar L Rod Ball Arm. This 2 part ball joint system features a down tube that fits virtually any 7 8" receiver, making it compatible with most standard tom holders. It also includes a memory lock. The ball joint itself is freakishly stable, and you can easily adjust the L rod itself with a single finger screw, making it easy to set your tom at any angle you like. Infinitely adjustable ball