Evans Corps Clear Marching Tenor Drumhead, 14 Inch 14" clear tenor head made using two plies of film. A top ply of 6.5mil and a bottom ply of 10mil film Produces that sought after drum corps sound by producing clear and discernible pitches that reach into the stands The extra thickness (16.5mil total) compared to standard tenor heads (14-15mil total) make the Corps Clear heads more durable and able to hold pitch longer Projects in the largest of stadiums while controlled in the indoor environment All Evans drum heads are designed, engineered and manufactured in the USA