The E-Ring is an easy-to use external overtone control ring which "floats" on the surface of a drum head. It removes overtones and flattens the drum head's sound and allows for easier tuning. Available in 10-Pack 'Fillers' for 10", 12", 13", 14", 16" and 18". E-Ring Pre-packs are available, matching the most common drum set configurations. For over 60 years, Evans has been an innovator in drumhead manufacturing and design. As the creator of the first synthetic drumhead and other revolutionary products such as EMAD, Hydraulics, and the UV1 series, Evans drumheads are designed with the intent of solving problems for drummers. Regarded for high quality and consistency all Evans drumheads are made in the USA and feature Level 360 Technology., Snare Package includes 14 x 1", and 14 x 1.5", External overtone control ring that "floats" on the surface of the drum head, Removes overtones and flattens the drum heads' sound and allows for easier tuning, Also available in Standard and Fusion kit packs for toms, All Evans accessories are designed, engineered and manufactured in the USA