The TAMA Soft Sound Ring is made of 6mm thick foam rubber. This drum accessory reduces the volume of an acoustic drum kit while retaining the natural tone of the shell. Designed with an open center hole, the Soft Sound Ring maintains the natural feel of playing an acoustic drum kit. The Soft Sound Rings are available for purchase in pre-configured packs or individually, from 8” to 16” diameters. Model No. SSRP52K Model Name 22"BD 5pc kit configuration Description 10", 12", 14" and 16" Soft Sound Ring Half Soft Sound Beater (BSQ5S)