The UX-80 universal clamp quickly mounts to existing stands to extend the reach or angle of existing adapters. Its secure, simple design features a rotating ratchet clamp that expands to accept posts from 1/2" to 1-1/8". Its 7/8" diameter can dock in most tom mounts as well as cymbal and tom stand tiers. This allows you to create new angles with existing stands, and reach new heights in mounting and instrument positioning. EXPANSION CLAMP Quick Release Revolving Clamp POST DIMENSIONS 7/8" x 13" CLAMP CAPACITY 1/2" to 1-1/8"