The self-adhesive gel sticks to the surface of drums, cymbals, and most percussion instruments. The possibilities are endless; by simply moving the damper around the surface, you can eliminate any unwanted resonance and achieve the exact sound the situation requires. They come in a pack of four and measure approximately 1 inch wide by 1 to 7 inches long. Ideal for live or studio applications! Since live and studio situations can negatively affect your desired resonance, Moon Gels can be placed in different numbers and different locations on your drumheads to achieve your desired goals. Moongel Damper pads are 1" x 1-1/2" squares of the famous Moongel silicone, which, when set directly on the drumhead, produce the perfect amount of ring-control damping. No adhesive is necessary, although the squares stay in place even when the drums are played aggressively.