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

Was on time Well packaged Did a good job

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

Teeth wore done after drilling thru two 1/2 boards. Junk

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.

Nothing

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.

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.

Hole saw is well made and cuts nicely, but is too shallow to be of any real use when trying to bore through 5/8 or more plywood. If it was just another 1/2 inch deep it would be a fantastic tool, but as it is it will end up in my box of unused but cant bring myself to throw away tools.

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.