Detail 01
Purpose-built hole cutter
Cuts a round edge in one motion instead of the ragged arc a utility knife leaves, which then splits.
Product detailSKU #1274115039829
Bass Drum O'sHole Cutter
1/5
Independent shopping perspective
The Korena take
A hand tool for cutting clean port holes in bass drum heads. For drummers installing a port ring without improvising with a knife.
Strong match
Who this is for
- Cutting a mic port in a new front head
- Drum techs doing repeat port installs across a kit collection
- Anyone pairing a cut with a reinforcement ring
Consider the trade-offs
When to look elsewhere
- Drummers who already have a cut port
- Anyone needing to enlarge a hole in an already-mounted head
- Players wanting a tuning key — this cuts, it does not tension
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Drum head material
Mylar tears from any nick. A clean circular cut removes the stress points that start those tears.
Detail 03
Hand tool
No power, no drill press. Works on a head off the drum or laid flat on a stable surface.
Detail 04
Sized for port rings
Cut diameter is intended to pair with a port ring so the ring grips the edge rather than sitting loose.
Final check
Know before you order
- 01Port ring is sold separately — this only makes the hole
- 02Take the head off the drum first; cutting on a mounted head risks slips
- 03Mark and check placement before cutting — the cut is permanent
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Is a port ring included?
No. This is the cutting tool only. The reinforcement ring that finishes the edge is a separate purchase, sized to the hole you cut.
02Can I just use a knife instead?
You can, but mylar splits from any nick left behind. A clean circular cut is what keeps the hole from spreading under tension.
03Is this a drum key?
No. It cuts port holes in heads. It does not turn tension rods, so you still need a key for tuning.
04Do I cut before or after mounting the head?
Cut first, with the head off the drum and flat. Cutting on a tensioned, mounted head makes slips more likely and mistakes permanent.
