Full Force single ply, medium weight bass drumhead feature an acoustically “vented” muffling ring tucked into the hoop on the underneath side of the head. The muffling ring helps control overtones and features vent holes along its perimeter that allow the ring and head to move as one. This 10mil head has a powerful attack with outstanding projection with just the right amount of tone control. MFSKU FB24 UPC 659007006197