A mirrored mylar head provides a thinner, snappier sound than the regular BFSD. BFSD lowers the fundamental pitch of the Drum without any of the hassle. Simply placed on top of your existing Snare or Tom skin, the custom blend of patented rubber and plastic instantly face-lifts your medium to high-pitched tuned Drums and delivers that sought after, authentic, deep & warm tone we all know & love. Equipped with a thumb cut out for quick removal, a rubberized gasket for weight, balance and stability.