Percussion Accessories -Kick Drum Sound Highlights Generic Brand Kick Drum Sound Description: Bass Drum / Kick Drum / Enhan Bass Port Hole Drum Kit. Made of eco-friendly ABS plastic, it is durable and not easy to deform. Rubber drum ring, can be a degree of relaxation. This product converts the bass drum into a bass echo speaker, strengthens the bass audio propulsion, concentrates the air in the battery cavity and compresses it inside, which makes the bass part more powerful and the effect is adjustable; just adjust the tightness of the bottom drum skin. Comes with a battery reinforcement ring specification: Material: ABS plastic Size: approx. 170x106x100mm / 6.69x4.17x3.94inch Package includes: 1x Drum Enhancer 1x Drum Enhancer Ring Note: Color may be slightly different due to the color calibration of each monitor. Please allow slight measurement deviation due to manual measurement.