Universal percussion pad mounting system. The Alesis Multipad Clamp is a clamp and boom-arm assembly that attaches directly to any cymbal or rack-mount stand. With the 5,75'' clamp and adjustable opening, the clamp attachment accommodates stands of any thickness. An infinitely variable ball-and-socket joint enables you to position your multi-pad at the perfect playing angle, and the flat pad mount fits Alesis and other multi-pads perfectly.