PATENTED UV-CURED COATING PROVIDES UNMATCHED DURABILITY AND CONSISTENCY. MADE FROM A SINGLE PLY OF UNIQUE 10MIL FILM. MADE FROM A SINGLE PLY OF UNIQUE 10MIL FILM. A SINGLE PLY OFFERS AN OPEN AND EXPRESSIVE SOUND. EXTREMELY VERSATILE FOR A WIDE VARIETY OF MUSICAL APPLICATIONS. LEVEL 360 TECHNOLOGY COLLAR DESIGN ENSURES PROPER CONTACT BETWEEN DRUM HEAD AND DRUM SHELL. ALL EVANS DRUM HEADS ARE DESIGNED, ENGINEERED AND MANUFACTURED IN THE USA