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.
This set Includes four rings: 10,12,14,14" (Fusion)
These are less than half price due to the manufacturers making them slightly oversized.
They will require trimming down by around 1mm on some of the rings. This is a very quick
alteration which can be done in minutes.