ABuff 4 inch 100 mm Hole Saw with Arbor, Heavy Duty 38mm Depth Bi-Metal HSS 4 Inch Hole Saw Blade with Positive Rake Teeth for Cutting Soft Metal, Drywall, Plastic, Wood, Fiberboard

This hole saw made installing a few dozen 4” recessed ceiling lights a breeze. I also used it to punch a hole for 4” round junction boxes. Those were done through 1/2” drywall. At first the holes were a little jagged because the drywall crumbled but I think that was my fault being cautious and taking it slow. When I went full-speed beast mode it punched through clean and precise. My husband used it on a 4” duct for the dryer vent going through 3/4” Zipboard exterior sheathing - clean hole, perfection. No complaints here!

This hole saw cuts great and overall does a good job. Only reason I gave it a 4 instead of a 5 is because it had a little manufacturing defect and due to time constraints I chose not to send it back. The set screw hole was not properly threaded and the set screw would not hold. I was able to redrill and rethread the hole myself and use a slightly larger set screw. Other than that this hole saw is a good buy.

I have used other hole saws, and as far as cheap ones go, this is actually quite nice, worked very well, though the shank is quite large, just barely fits the chuck in my drill. Would have been a bit more convenient if it had used a 1/4 shank, then I could have used my standard extensions, which would have been nice, but its not a huge deal.

It was needed.

Cut well through siding to install new light and cut well through 2x4 to install electrical box. Is a true 4 inches unlike another product that advertised 4 inches but was actually metric and a few millimeters shy of 4 inches, made for a real problem when you tried to install a 4 inch duct.

Very solid assembly. The Mandrel is solid - but do consider that you need 1/2 chuck, I luckily had several drills around but my first try was on a smaller 3/8 and it didnt fit but thats on me. The hole saw is solid. It does come with a wrench and spare center drills - very helpful. Dimensions wise the manufacturer is on the money - good 4 hole and with the teeth alignment as-is the final product is just a tad over 4 which is exactly as it is supposed to be for 4 conduits. Great product. Thank you

As most will tell you, with tools the old adage that you get what you pay for holds very true. I only needed to cut a few holes with it, and it did so more than adequately. For my needs it beats paying over twice as much for a better quality unit.

So far I have bored through heavy plastic (installing vents in a double panel plastic shed) and light wood. Not sure how they would handle metal or thicker wood but as i said this is a great set for the price. Handy when you need it. I recommend if the workload isnt too excessive.

Nothing

I have used this type of hole saws for many years with varying success. This one did a GREAT job on the project that I was working on. I needed two holes cut, but a chest freezer is insulated and so 4 pieces of metal had to be cut and this saw went through the metal on the outside then through the insulation, and out the other metal side with ease. There was also copper tubing hidden in the insulation on both holes. This saw cut through all of this and the teeth remained sharp as new when the job was finished. ( Im making a fish smoker. The Reds are starting their run up the Kenai River here in Alaska)