2X Bass Drum Amp ABS Rubber Bass Drum Kick Amp With Black Port Hole, Mic Hole Drum Head, Red1.100% Band Brand New And High Quality2. Tuned port designed for bass drum3. Extend your low-end frequencies4. Add more punches to your audio5. Make the bass part more powerful, and the effect can be adjusted; Simply adjust the tightness of the drum surfaceThe enhancer instantly improves the sound of each bass drum. High wear resistance and excellent durabilityUsing method: first put in a protective sticker on the kick drum skin, and slice lengthwise on the inner diameter of the wheel to make a full wheel. The rubber part of the speaker is stuck on the skin of the drum and the installation is completeColor: RedMaterial: ABS + RubberSize:Outer Diameter: 18.5cmInner Diameter: 10.6cm/4.17inHeight: 10.5cm/4.13inWeight: 380g/13.4ozPackage Content:2 x Amplifier Bass Drum2 x Protective StickerOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.