This highly durable snare head is a great cure for snare drums with excessive or unwanted overtones.The Genera HD yields an aggressive rimshot and balanced response. This durable two-ply head (7.5mil external, 5mil internal) with 2mil overtone control ring barks live, yet is ideal for the studio. The addition of small vents around the perimeter of the dry version eliminate additional overtones and create a more focused sound.