EVANS HD Dry Coated Tom Pack - Fusion 10ʺ, 12ʺ, 14ʺEVANS HD (Heavy Duty) Dry batter heads balance durability and sonic response with advanced overtone control provided by precision drilled dry vents. HD Dry heads are made with a coated outer ply of 5mil film and an inner ply of 7. 5mil film, plus a 2mil control ring on the underside of the head and dry vents around the perimeter to eliminate stray overtones. HD Dry heads have a semi defined attack, with short sustain and a bit less brightness than