Mapex Drum Armory Studioease Fast 6-Piece Drum Shell Pack (Roasted Chestnut)SONIClear Bearing Edge The SONIClear Bearing Edge is standard on all Armory shells and allows the drumhead to sit flatter and make better contact with the shell. The result is a stronger and deeper fundamental pitch, effortless and consistent tuning, and a significantly expanded tuning range. For the serious player, the increased head to edge contact increases shell vibration, allowing the sonic nuances of the Hybrid shell to stand out. TOMAHAWK Snare