The Bass Drum O's Hole Cutter is a tool that can cut circular sound holes in a bass drum's resonant head for venting, porting, and microphone access. It can cut holes from 2 inches to 10 inches in diameter. The cutter works like a circular glass cutter, with the user pushing a center punch through the bass drum's resonant head and then wheeling the cutter tool around to create the hole. The cutter is adjustable and can make port holes as small as 2 inches and as large as 10 inches in diameter.