Now you can cut your own portholes into your own bass drum resonant head. Easily cut 4" & 6" port holes and protect it with Gibraltar's 4" & 6" protector rings (not included).
The port hole cutter allows you to cut the perfect circle right in your logo head. The metal tack pokes a hole into the drum head and secures the cutter and the head when you turn the hole cutter. The circular blade cuts the head as you spin the hole cutter. What's cool is the tack is removable, allowing you to change the diameter size of the hole by placing the tack in any of the nine hole spaces.