Endpin Jack Reamer

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Endpin Jack Reamer

Item # 4323
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Endpin Jack Reamer

About This Item

This machined steel 2-step reamer is made specifically for enlarging a guitar endpin hole to accept a 15/32" or 1/2"-diameter endpin jack.

It won't chip the finish, and it's semi-fluted to help keep the hole round.

The 3/8" shank can be chucked in a hand drill for slow reaming. The upper 1" cutting length is 1/2" diameter; the 1" center section is 15/32" diameter, and the lower 2-5/8" section has a standard 5-degree endpin taper to 1/4".

Trade Secrets!

Trade Secrets!

Installing an endpin jack

Ever have trouble installing an endpin jack? Did you chip the guitar's finish, or drill the hole out-of-square? Did you goof up on a customer's guitar? You'll want to read this week's Trade Secret from Dan Erlewine.

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  • 4.83 average rating from 24 reviews
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Pretty great!

(Customer's Reviews)

I used it to install K&K Pure pickups in two guitars and it was excellent. Be careful to go slowly, and keep the bit perpendicular to the guitar. I had to make a few adjustments to the first hole I drilled, but it all turned out fine in the end.


Stewmac's Finest Tool

(Customer's Reviews)

This is the best thing I ever bought from Stewmac.
It prevents the possibility of serious damage to the instrument and works perfectly, gives you the ability to size the hole precisely for the jack.
Well worth the price!

Stephen Neal, luthier for 45 years


First time with confidence.

(Customer's Reviews)

I purchased a L. R. Baggs "Lyric" to install into my Martin, Eric Clapton, 000-EC. I discovered the necessity of changing the endpin diameter. I always look to Stew Mac for assistance with any guitar related project. Sure enough not only was a specific tool available but instructions on how best to use it. Yes the price is high but when I received it and saw the quality I felt better. When I picked up one of favorite guitars and used it then I really didn't have any complaints as my Martin had been reamed without any damage! Thanks Dan for another awesome solution to an project problem. (By the way, the end result sounds fantastic!)

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StewMac PDF Catalog, page 46 See Endpin Jack Reamer
on page 46 of our StewMac Catalog PDF

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