DEWALT Quick Change Hole Saw Mandrel, 1-1/4" to 6" Diameter, 7/16" Shank (DW1803)

Patrick D. Mcginnis: The photo shows the Dewalt Hole Saw Mandrel. What you get is a Dewalt Hole Saw Mandrel but not the one showed in the photo. I had one like the one in the photo, which has a silver lower base which allows you to retract the locking pins. What you get is an all black locking pin holder which will retract the locking pins and the complete base, but it is not what is shown in the photo. The other problem with this holder is that the threads are very tight and it is hard to screw the hole saw on the mandrel and is extremly hard to remove the hole saw. Another problem is that the locking pins do not align with the holes in the base of the hole saw as well as the silver retractable one. This does work but it makes you work to use it. I would not buy this again.

United States on Oct 08, 2022

Kevin K Bell: For the last several years I've been using two different types of quick release mandrels from another big name, neither of which would create a tight connection to their own hole saws or anyone else's. On every saw, the mandrel would bottom out before it got to the next set of holes, so I had to back up a quarter turn or so to seat the pins. Wobble, wobble, wobble by design. I ordered this one based on the reviews, and I'm so glad I did. It's an all around better mouse trap. The others are in the trash.

United States on Sep 13, 2020

Amazon Customer: Handy unit. 3 stars because there's a magnet in this and comes out of place I'm gonna try gluing it when I have time.

Canada on Mar 22, 2020

Stan Rae: Someone’s review stated that this mandrel doesn’t fit a 3/8” chuck. It fits my 3/8” DeWalt drill’s chuck without any issue at all, and apparently fits everyone else’e 3/8” chuck as well. Mandrel’s quick release works beautifully.

Canada on Mar 03, 2020

TGM: Costly but works

Canada on Aug 15, 2019

Handy Doug: Although, I used it on a relatively small hole - 2 inch - the mandrel worked great and there was no problem with the hole saw tightening up - it was removed without difficulty - I expect that it will work equally well when I use it on some 4 inch holes in the future.

Canada on Jan 26, 2019

SJ: Needed a mandrel to mount my hole saw and got this. Unfortunately my hand drill only took 3/8" shanks and this one is a 7/16" one. Guess I didnt read carefully the specs. But I decided to keep it rather than return it. It'll be useful down the road.

Canada on Nov 20, 2018

Terrence WalshTerrence Walsh: This DeWalt arbor worked great. I particularly like the way the cap is shaped. It's easy to retract and hold while spinning a hole saw on or off the arbor.

I happened to have three hole saws that were all close to 4", and none were DeWalt. See pic. Everything fit perfectly. The Irwin, Milwaukee, and Lenox hole saws all installed easily on the DeWalt arbor. Interchangeable. Maybe you knew that already but here's the pic to prove it.

This arbor fit nicely in the 3/8" chuck on my Hitachi drill. That said, a 4" hole saw in wood is a torque-hungry monster. A 3/8" drill may be able to handle a couple holes, with care. Cutting holes in drywall for recessed lights, etc., could be done with a drill that size. If the project is bigger than that, a 1/2" drill is the way to go, for safety, neatness, and wear and tear on the drill.

United States on May 02, 2017

Ryan Flagler: I've only ever purchased cheap hole saws and shanks from my local discount tool store. I've had hit and miss luck with those. Usually they end up wearing loose and the hole saw begins to wobble. When purchasing this, I had a hard time believing you could "quickly" swap hole saws with this thing and that they would still be held on tightly. Let me just say, this thing works amazingly well.

It attaches with threads that screw into the back of the hole saw blade. Once you get about 1/4" in, you pull the silver colored part away from the the back of the hole saw blade and screw another 1/4" or so. When you release the silver part, it releases 2 pins that will line up with the hole saw blade to lock it into place. Quick, easy, no tools required and it is SOLID. I am very happy with this product and would not hesitate to purchase it again.

United States on Jan 12, 2016

Ernst W. Mayer: As this was my first hole saw and I didn't already have the mandrel portion, I ordered the combo of 2"-dia (2"-max-depth) hole saw and 7/16"-shank mandrel [DW1803] recommended by Amazon. The 7/16" mandrel shank is too large for my venerable 3/8"-chuck corded Black & Decker drill, so I used it in my 1/2"-chuck cordless Dewalt drill. In retrospect, since the mandrel shank is nicely hex-shaped to prevent slippage within the chuck, the similar 3/8"-shank Dewalt mandrel [DW1805] would have also worked just fine. If you only have a drill with a 3/8" chuck or have drills with various chuck sizes like me, that's the one you want.

To newbies like me the quick-change mandrel is a little confusing at first, so thanks to the previous commenters who provided tips on how to use it. Briefly, the Dewalt quick-change mechanism is both a locking and anti-locking device. The 2 pegs in the silver-colored locking collar snap into one of the 2 opposing-hole pairs in the bottom of any Dewalt hole saw to hold the cutting end in place, but at the same time prevent the hole saw from locking itself onto the mandrel under the torque of drilling. Just slip the mandrel shank into your drill chuck...

United States on Sep 01, 2015