A must for miking

This 'O' ring is a must for the front head on bass drums to allow miking if playing gigs or recording in the studio. Its made of tough plastic and stops the front head from getting damaged when a microphone is placed in the bass drum + it also adds to the resonance of the drum. To cut a hole in the head, you can use the 'O' ring as a template + cut a circle SLOWLY using preferably a hobby knife !