Muff’l Control Ring # MF-1015-00 15 inch The Muff’l® Control Ring features foam rings mounted in drums with specially designed trays that hold them in place to provide partial dampening for Tom, Snare and Bass drums. Great for low volume practice applications Triple notched system secures pads without adhesive. Special plastic trays hold the foam in place Ideal for low tensions Easily mount under the head and on top of the bearing edge