Glieskir CP-01 Automatic Center Punch 5 Inch 2 Pack
Last refreshed Jun 25, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A fair budget punch for light, occasional use and as a car emergency tool, but the spring is the part most likely to wear out first.
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ASIN: B09QHNMK1SModel: CP-01Category: Center Punches
Overview
A 5 inch spring loaded steel punch sold as a pair, built to mark or dimple metal, wood, glass and plastic with one hand and no hammer. A tension screw lets you dial the strike from a light scribe mark up to a full punch.
Glieskir's punch uses a knurled, chrome and black finished steel body with an internal spring that releases on downward pressure, so the mark comes from twisting the cap rather than swinging anything. Buyers who use it lightly report a clean, accurate mark, while several who lean on it regularly describe the spring losing its lock and release over time. Two punches ship per pack, plus a spare set of tips.
- 5 inch heavy duty steel body
- 2 pack with spare tips
- Adjustable spring tension knob
- Chrome and black anti slip grip
Who it's for
DIYers, hobbyists and car owners who want an inexpensive punch for occasional marking or a glass breaking tool to keep in the vehicle. Not aimed at a machine shop running one punch daily for months on end.
Pros and cons
- Adjustable tension for light or heavy marks
- Two punches plus replacement tips included
- Doubles as a car window breaking tool
- One handed operation with no hammer needed
- Spring mechanism reported sticking or failing after weeks of use
- Some units stopped locking and releasing correctly outside the return window
Performance notes
The tension screw sets how hard the internal spring strikes when you press the tip against the work, so accuracy depends on that spring cycling cleanly through load and release. Several owners found that cycle degrades with repeated use, where the punch still feels tensioned but no longer snaps and releases the way a fresh unit does.
Specifications
| Brand | Glieskir |
|---|---|
| Model | CP-01 |
Frequently asked questions
Does the Glieskir center punch need a hammer?
No. It is spring loaded, so pressing it against the work piece releases the internal spring and makes the mark by itself.
Can the tension be adjusted?
Yes, a tension screw on the cap lets you spin it to set a lighter or heavier strike for marking, punching or staking.
How reliable is the spring mechanism long term?
Several buyers report clean results, but others say the spring stopped locking and releasing properly, or failed outright, within weeks of regular use.