Remo MF1122-00 Muff'l Ring Control 22-Inch Drum Muffler 22" diameter The Ring Control features foam donuts for partial muffling Specials plastic trays told them in place and easily mount under the head and on top of the bearing edge Triple notched system secures pads without adhesives, even on bass drums with low tension Remo Muffles are versatile accessories that fit inside any drum without attachment to provide moderate ring control.