"The BRUSH-RING consists of almost 300 of finest resilient wires, and is placed underneath the batter head; its force against the head regulates automatically with the head tension and so controls the overtones. - suppressing of undesirable overtones even at high head tension without affecting the drum’s volume or tonal character. - Single strokes are separated much clearer. - Tuning the drum becomes a child’s play as the BRUSH-RING equalizes differentials in head tension from screw to screw - clearer and very powerful sound with great projection outside. - increased wire snare effect The BRUSH-RING is suitable for ""Kleine Trommeln"" as well. "