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Part# 12-02743
MFR Model# 123C


Reversible cutter for both 2-1/4" and 3-1/8" instrument panel holes. Easy to use even with instrument panel installed in aircraft. Allows for close work with other instruments already installed. 4 lbs (2Kg) shipping weight.

In The Box

  • Size: 2-1/4" & 3-/18"
  • Weight: 4 lbs
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Great tool.. I was reluctant to purchase this tool based on the reviews. I went ahead and ordered it and it works great. Punched 8 holes in a 6061 T6 .90 dash panel the first day I had it and it was simple.

Jeff A
September 23, 2020

i am amazed how quickly it arrived. great tool used it to punch over 21 holes already works great a quality tool well made highly recommend both tool and your company. if i could give more stars i would this coming from a military aircraft structural mechanic first class ray reininger

Raymond H
March 9, 2020

Works great!

Robert H
January 2, 2020

Good for popping quick holes. Will warp the metal depending on thickness. I bought this to make a panel overlay with some .032 aluminum and was left with some warping outside of the instrument hole. Cut a new hole for a G5 in my thinner primary panel and this was perfect for that job.

Adam B
May 20, 2019

Nice product for making very clean instrument holes. Only made a few so far so I cant tell you if blades dull quickly after use or not. Only down side was no instructions for use, however you can play with it and figure it out quick enough. Basically sandwich the sheet metal between the cutting piece and hole and turn the nuts until it punches through.

May 26, 2017

The claim that this tool is suitable for up to 0.125â aluminum is not correct. We u it on 0.086â aluminum and didnât even get one hole made before the thread of the center bolt stripped. It required so much torque that it warped the material and thereâs absolutely no way it would work with other instruments installed like suggested in the description as it requires a long handled socket on each side and a lot of muscle. Very disappointed and will be attempting to return.

Luke T
November 11, 2019


Q: What is the thickest aluminum this tool can punch through? Regarding Part # 12-02743

This tool can punch through aluminum up to 1/8 inch (.125).

Q: Can this instrument hole punch be used on panels made from composite / GRP? If not, can you recommend an alternate?

This tool is designed to be used with aluminum panels. I would suggest a hole saw with teeth to cut the material.

Q: What gauge metal can this instrument hole punch get through?

This hole punch can get through aluminum up to 1/8" (.125) thickness.

Q: What is the diameter of the center bolt?

The diameter of the center bolt is .625".

Q: Does this punch do BOTH 2-1/4 and 3-1/8 holes?

Yes, it is a reversible cutter for both 2-1/4" and 3-1/8" instrument panel holes.

Q: Where can you get the plate to help you line up the holes for the mounting screws?

See our mounting hole template, part number 12-14600.

Q: Do you have operating instructions for this tool?

No, the manufacturer does not supply instructions with this tool.

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