Kick drum hole accessories

Bass Drum Hole Accessory - Red. People say it looks striking and cool. For use as a sub-woofer for your bass drum. The inner diameter of the tube is 10.6 cm, so it requires a hole of approximately 11 cm. Instructions on how to make the hole can be found on YouTube, etc. A compass cutter is commercially available (if needed, it will be an additional 500 yen; please comment). To cut the hole, remove the head, peel off the round gasket film, and attach it to the surface of the head. Insert the main tube and insert the rubber from the back. Applying water makes it easier. Attach it to the microphone hole and connect it to an amplifier (see photo). Have someone listen and adjust the sound, etc. No profit is being made! It is already packed and ready for immediate shipping.