Mollom Heavy Duty Carbide Hole Saw, Hole Cutter cuts Stainless Steel, mild Steel, Iron, Copper, Brass, Plastic (3 76mm)

Unfortunately you get what you pay for. The pilot bits arent stepped correctly. This will make the hole saw jump in and break teeth. I looked for knew pilot bits like the kind my klien set has but I cant find them long enough. The hole saws are pretty good. Once I predrilled a pilot hole they cut well.

Bought the 180mm (7.x) hole saw to drill a hole in a 250 gal propane tank, my smoker project. It cut it, still has its teeth and I presume would be able to cut more. I figured it was a 1 and done use but if I ever need to use it again it might have some life left in it. Worked out perfectly for the 7 pipe Im using for the stack.

Does as its advertised. No regrets buying it. Cuts through 1/4 inch aluminum like its nothing.

Material resistente

Bought two, and both drill oversized. One drills 0.20 oversized and the second drills 0.30 oversized. If you are drilling say a bolt hole, it’s a really sloppy fit. The quality of build was fine, but the accuracy wasn’t.

I read most of the reviews on this 2-1-2” hole saw and tried it anyways but bought two just in case. The first one went through no problem I was drilling through 1/2” steel plate kept the lube to it was patient and no issues. The only thing was the spring to push out the piece came off pretty much right away. Didn’t chip any teeth and worked fine. And some reviews said over sized but as you can see it wasn’t.

I bought this for sheet metal. It worked pretty well. I did have to go in reverse to get a groove going and go slow so I didnt rip the metal. Lowest priced one I could find.

worked well on plastic hobby box - clean cut, no shattering around hole

Broke the first pilot bit and order 5 more… didn’t break a second.. It did the job of cutting into my well casing…seems to be undamaged. It not a very easy hole to drill drilling into a non flat surface do yourself a favor and start on your lowest clutch setting or you will break the pilot.. It did have alittle wobble to it. But not to bad.

I used this 13/16” hole saw to drill (22) holes through 1/2” steel plates and structural beams. It worked flawlessly, and so much faster than conventional hole saws. I used one bit for these (22) holes and it still looks good. I kept it cool by continually spraying WD-40 on it and not forcing the bit through the metal. Take your time, run the bit at a low speed, keep cleaning the chips out of the hole, keep the bit cool, and let the bit do the work; you will be very satisfied.