Evans Resonant EMAD series (REMAD) features 7.5-mil of single-ply black film. The unparalleled industry standard EMAD damping system combined with an internal fixed ring provides controlled overtones. The 4 offset mic port features a plastic sleeve that focuses pitch and enhances attack while providing protection for the port. All REMAD series heads feature an extremely durable second generation plastic sleeve. Features Made using a single ply 10mil film The perfect resonant head for use with the EMAD series batter heads A fixed, internally mounted black plastic control ring holds in place a foam damping ring that controls overtones The 4 offset mic port features a plastic sleeve that focuses pitch and enhances the attack while providing protection for the port All Evans drumheads are designed, engineered, and manufactured in the USA Specifications Treatment: Uncoated Ply: 1 Thickness: 10mil Technology: EMAD WATCH: Evans Drumheads: EMAD Bass Heads