Evans Strata 1000 concert snare drum head features a single ply of 10mil film with a coating that closely resembles traditional calf skin. The thicker film yields a darker timbre and warm tone resembling slightly thicker calf skin. Evans Level 360 technology is incorporated to extend the level playing surface of the drumhead, 360 degrees around the drum. The vertically enhanced collar design guarantees even contact with the critical bearing edge of the drum shell, resulting in: ease of tuning, extended pitch range and optimum quality of sound. Evans Level 360 technology resolves the age-old dilemma of traditional synthetic heads consistently not fitting the drum shell without using considerable force. For over 60 years, Evans has been an innovator in drumhead manufacturing and design. As the creator of the first synthetic drumhead and other revolutionary products such as EMAD, Hydraulics, and the UV1 series, Evans drumheads are designed with the intent of solving problems for drummers. Regarded for high quality and consistency all Evans drumheads are made in the USA and feature Level 360 Technology., 18" concert snare head with a single ply of 10mil film, Unique strata coating simulates the feel and warmth of sound found with calf skin heads, Thicker film yields a dark timbre and warm tone that resembles slightly thicker calfskin heads, Perfect for students and seasoned professionals alike, All Evans drum heads are designed, engineered and manufactured in the USA