Bi-Metal 4 inch Hole Saw with Arbor Mandrel for Deeper Cutting of Wood,Cornhole Boards,Drywall,Plasterboard,Plywood,Steel,Aluminium,Brass,Copper,Zinc,Tin,102mm

I should preface this review by stating I have only use the 61/4" hole saw once, but it made a clean cut in drywall for a recent recessed lighting project. I followed some YouTuber's advice and ran the saw in reverse on my drill when making the cut to avoid drywall tear out and it worked even though the blade's teeth weren't facing in the cutting orientation. For $16, I can't complain. Has a safety dial to lock the blade on the drill bit using 2 small rods so the blade doesn't spin free and off of the drill bit. The cover worked great and captured all the drywall dust so there was zero mess. Quality was decent for the price, I noticed the blades weld seam but it didn't affect my cut. Overall very satisfied with the purchase and looking forward to becoming more proficient with it during future projects.

I only used this in plywood and laminated wood to run exhaust vents. It worked as well as any name brand hole saws I have for that purpose. Arbor threads and locking holes are compatible with my old saws as well.

Purchased this to cut holes in a steel door for round vents, based on the low price I wasn't expecting much but it got the job done. Blades did not feel sharp to the touch, 4 holes in total and still cutting when finished. I will ding it one star because the center drill set screw would not stay tight.

Good basic quality!

Worked great to cut speaker holes in the plastic dash of my GEM golf cart. Stayed sharp.

I purchased this kit for an upcoming job. when I went to use it the saw it wasn't cutting at all. I checked the pilot bit to find it was not spinning. The set screw was not engaged with the pilot. At further inspection I discovered that the set screw hole was not bored deep enough for the set screw to go through and tighten the pilot bit, rendering the entire kit useless. The kit was 2 days past the return date so now I was stuck with it. I had to stop what I was doing and go to the home center to buy an arbor that would fit the whole saw. The arbor cost more than the whole kit. But if I was going to get any use out of the whole saw I had to do it. fortunately I will be able to use the arbor on other "real" whole saws. When I finally got it working the whole saw was of a low quality and I was barely able to drill one hole into a rim joist. I do not recommend this product.

We use this hole saw to cut speaker holes in ceiling tiles to make sure they were perfectly circular and centered. This also has a lot of weight to it so you actually have to use the drill in reverse so the torque doesn't send it flying and scorching or scraping drywall or ceiling tiles. Do NOT use this on stucco. It will destroy the teeth on the hole saw. We use this hole saw for almost 2 years before it had to be replaced. Because I was stupid and used it on stucco. It's great for the price.

This is a well made solid hole saw that works great. Thr Arbor is robust and attaches to the cutter very effectively. Well worth the money.