Pearlized proprietary system with Tamtam Holder Bracket, which mounts to the Tamtam hoop with die cast clamp, and features the natural tamtam sound. 2 types for 8" & 10" and 12" to 16". Please note that I.S.S. cannot be attached to the pearl die-cast hoop "MasterCast Hoop". Vision & FZH? For 12" & 16" (caliber)