No problem for normal use. Please check the condition in the photos. Discounts are available for combined purchases with cymbals. Please comment if you're interested. Drumheads with high uniformity created by innovative ideas and computer control. ＜EMAD Bass Batter Head＞ EMAD is EVANS' unique sound control system, featuring two different widths of urethane mute rings (damping rings) that can be replaced without removing the bass drum head, allowing for easy attachment and detachment to adjust the degree of muting to your preference. With a 10mil, 1-ply film, you can create various sounds with a single bass drum head, from open sounds to tight attacks and fat sounds with emphasized low-end, by using the two detachable damping rings. EMAD2 uses a 7mil outer and 10mil inner, 2-ply film to further enhance attack and durability. Finish: Clear Thickness: 7mil + 10mil with EMAD Ring Size: 20 inches EVANS BD20EMAD2 20 EMAD2 Bass Batter Clear Bass Drum Head Brand: EVANS Remo Remo Evans