Want low-volume practice without sacrificing sound? Meet the Black Holes, your new best friends. Designed to resolve the long-time struggle that drummers have faced - practicing on their drums without driving everyone around them crazy, while still maintaining the sound of their drums. Just simply snap on, tune to your desired tension, and you're ready to go! This starter pack includes 10", 12", 14" and 16" Black Hole drum heads, plus the 22" Slide-In V2 Black Hole bass drum head that fits snugly INSIDE your bass drum rim, with no bungees or tools required!