Evans Onyx Drum Head, 13 Inch 13" drum head made using two plies of 7.5mil film Two plies offer consistency and durability for longer playing time A frost coating gives the Onyx heads a matte black appearance and increases low-end response and attack The Onyx tom heads are the perfect aesthetic and sonic compliment to the Onyx bass heads and Onyx bass resonant All Evans drum heads are designed, engineered and manufactured in the USA