Product Information: Get greater focus on tonal response with the combination of a fixed 10mil internal overtone ring and the 10mil single ply of film with EVANS Clear EQ4 drumhead. Product Features: 26" drum head made using a special, single ply 10mil film An internal overtone control ring and a removable muffle ring coupled with dry-vents work extremely well with and without a microphone Very versatile head for all music genres; a true working drummer's choice All Evans drum heads are designed, engineered and manufactured in the USA For more information and specifications, please refer to the manufacturers website