7 1/4" drum head with two plies of 10mil film with a 2.25" patch between * Bright, penetrating slap tone with a full, round low-end * Etched texture simulates the feel of animal skin while avoiding the problems associated with natural skin heads * Tri-Center minimizes overtones and adds weight to the center to enhance the fundamental tone * All Evans drum heads are designed, engineered and manufactured in the USA