The self-adhesive gel sticks to the surface of drums, cymbals, and most percussion instruments. The possibilities are endless, by simply moving the damper pad around the surface, you can eliminate any unwanted resonance, and obtain the exact sound the situation demands. They come in a pack of four and measure approximately 1 inch wide by 1-7/16 inches long. Great for live or studio applications! Since both live and studio situations can adversely effect your desired resonance, Moon Gels can be placed in various numbers and various places on your drum heads to achieve your desired goals. more »