Evans G12 drumheads feature a single ply of 12mil film, giving you a single-ply feel with two-ply durability, which provides a deeper fundamental tone and enhanced projection. This drumhead incorporates Evans Level 360 Technology for ease of tuning, extended pitch range, and optimum quality of sound. Features Made with a single ply of 12mil film 20% thicker than a standard single-ply drumhead, which offers the feel of a single-ply head with two-ply durability Increased depth, durability, attack, and projection compared to a 10mil head Exclusive Evans Level 360 Technology collar design ensures proper contact between drumhead and drum shell All Evans drumheads are designed, engineered, and manufactured in the USA Specs Sound deep tone and enhanced projection Ply 1 ply Thickness 12 mil Coated/Clear Coated Diameter 12