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

The product is good quality and comes with multiple bits, however if you want to use it to cut sheet metal holes for HVAC holes this is not a good hole saw to use. Basically the bit just keeps enlarging the pilot hole and the saw itself just mars the surface. Ended up using a jigsaw following the mar the hole saw made. I suspect the teeth are too large.

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.

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.

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

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.

Was on time Well packaged Did a good job

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)

If you have an arbor already that works with your tools you most likely wont need this one. I have a small hole saw set, but I chose to buy this saw with the arbor in case the ones I have did not fit. Turns out the arbor with this hole saw is too fat for any of my drills. Fortunately my existing arbors fit perfectly.

I used this hole saw to cut two holes in a 3/4 shiplap ceiling for fans. Worked quite well and the teeth on the saw look to be just as sharp as when I started. As others have mentioned it does required a 1/2 inch drill.

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.