The E-ring is an easy-to-use external overtone control ring which "floats" on the surface of a drumhead. It rounds out and flattens the drumhead's sound and allows for easier tuning.
Evans 13" Power Center Reverse Dot Snare Drum Head B13G1RD
Evans 13" UV1 Coated Drum Head Skin B13UV1
Evans 13" Power Center Snare Drum Head B13G1D
Evans 13" EC Reverse Dot Snare Drum Head B13ECSRD
Evans 13" Genera DRY Coated Snare Drum Head B13DRY
Evans 13" Heavyweight Coated Snare Drum Head