Starrett A19 Oops Pilot Arbor

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Item Number:LSSA19
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Starrett A19 Oops Pilot Arbor

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The A19 includes:

  • Starrett Model A19 Pilot Arbor


  • Designed to fix a very common issue
  • The hole is too small and needs to be larger
  • It could be an existing hole or the Oops hole you just made
  • Use by mounting a hole saw = in size to the small Oops hole as the pilot
  • Also mount the real size hole saw and together do it right.

"Oops" Arbor

The "Oops" Arbor, No. A19, is actually a pilot drilladapter/arbor that fits in place of the drill in regular hole saw arbors. It wascreated to correct a common mistake.

For instance, you drill a hole with a 1" saw when you intended to use a2" saw, the first thing you do is say "oops" to yourself.

The first thing you would do is to put a 2" saw on a regular hole sawarbor. Then take the pilot drill out of that arbor.

Next, take the "Oops" arbor and put the 1" saw on it and insertthe 1/4" shank of that arbor in the drill hole of the regular hole sawarbor. The 1" saw will now pilot everything while the 2" sawcuts the proper hole.

The "Oops" Arbor also comes in handy in an old house when you need toincrease pipe openings and door knob holes

UPC - 049659660784

Overall Rating for Starrett A19 Oops Pilot Arbor
(based on 6 reviews)
Worked like a champ
By Roger Stimson from Okemos, MI on June 9, 2012
I needed to remove a faulty speed transducer thruhull on my sailboat. The Starrett A19 Oops Pilot arbor with a 1 5/8" inner hole saw covered by a 2" hole saw did the trick. Worked perfectly! Made a tough job a lot easier. Service at Tools Plus was excellect. RCS

I would recommend this item to a friend.

One of the best ideas that has come along in a long while.
By Jim from Chardon, Ohio on May 25, 2012
Drilling the wrong size hole happens to everyone. This tool allows you to go back and fix it without having to grind or file and end up with an off-center hole. I was surprised no one thought of it before, but I am glad it is out their now. Work as intended and cost much less than it is worth.

I would recommend this item to a friend.

Worked fine for me.
By Nicolas from TN on May 14, 2015
I used this with both 1 7/8" and 2 1/8 inch hole saws in a Milwaukee Magnum corded drill.

Only one side is machined flat and the shaft is skinny but it worked fine for enlarging holes in a 3/16" thick truck frame.

It did the job fine.
Only one side is machined flat

Skinny shaft, hopefully it holds up.

I would recommend this item to a friend.

Oops Pilot Arbor
By Ray from Florida on January 31, 2015
Great price, just the tool I needed, delivery on time. Even if I only use it once, it has paid for itself!
Simplicity, works as advertised.

I would recommend this item to a friend.

Great product that I don't know how I got along without it for so long
By Simon from Gig Harbor, WA on December 12, 2014
Great product when you want to enlarge an existing hole with a hole saw.
Problem solver, easy to use.

I would recommend this item to a friend.

A very useful time saving tool.
By Bob Kingsley from Naperville, IL on October 30, 2014
I'm an Electrician and often get small wooden cable spools with holes that are to small to fit a standard jack stand arbor. I use to have to find a piece of scrap wood and use a hole saw to drill the correct size hole in it. Then I would screw the scrap piece to the spool with the hole in the scrap piece centered over the small hole in the spool and then use the same hole saw I used on the scrap piece to drill out the spool hole. Then unscrew the scrap piece and repeat on the other side. With this tool, I put the correct size hole saw on a standard hole saw arbor and put a hole saw on the oops arbor that matches the small hole in the spool. With this setup I can drill out the spool hole in a few seconds as opposed to several minutes with the scrap wood method.
The tool is well made and should last forever. A huge time saver when making a hole larger.

I would recommend this item to a friend.

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