The Remo Muffl 12 Control Ring is a high-quality foam muffling ring from Remo featuring a triple notched system that ensures the ring stays in place without adhesive. Combined with specially designed plastic trays you can be sure that the rings will not jump out of your drum whilst youre playing. The rings easily mount either under the head or on top of the bearing edge. These rings are ideal for low tension heads and will even remain securely in place on bass drums with low tension. The Remo Muffl Control Rings are ideal for when you want to play or practice at very low volumes.