11" EXTENDED COLLAR DRUM HEAD WITH TWO PLIES OF 10MIL FILM WITH A 2.25" PATCH BETWEEN. BRIGHT, PENETRATING SLAP TONE WITH A FULL, ROUND LOW-END. 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. EXTENDED COLLAR DESIGN FITS CONGAS WITH LARGER HOOPS INCLUDING LP GIOVANNI AND EXTENDED HOOP MODELS. ALL EVANS DRUM HEADS ARE DESIGNED, ENGINEERED AND MANUFACTURED IN THE USA