The Dual Adjust Metal Smartphone holder offers unlimited angle adjustment in landscape or portrait mode, with a heavy-duty C Clamp that mounts to tables, cymbal stands, or microphone stands. Connect your phone to a stand anywhere on your kit with unlimited angle possibilities. The Dual Adjust Smartphone C Clamp Table/Stand Mount offers a super stable C Clamp mounting system, along with its adjustable thumb screw width adjustment, enables you to mount to a table or stand securely without slippage from vibration. The Dual Adjust system allows quick adjustment and infinite customization for your unique positioning. Drummer tested and proven durability.