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

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.

Awsome holesaw need a very powerful drill and a strong grip and lots of oil

Cuts great even at full drill speed! Recommend!

Drilling through the sheetmetal floor of my van tore the teeth right off this hole saw. Toothless, it failed to finish the first job I gave it, and then I toss it in the trash. Money wasted.

I used this to drill a hole in my bumper for a block heater. I thought it would take two due to quality, so I bought two of these. Turns out it is of great quality. I will use this for years

Looked good and packed well. Took it out of the packaging. Assembled the pilot bit into the hole saw with the included allen wrench and went to work. I was drilling into a Carlon plastic electrical box. In the process the pilot bit sheared about halfway up its length. Bit lasted about 2-3 seconds. Was looking forward to seeing how the spring would work for removing the drill debris from the bit. Like the number of licks to the center of a tootsie pop I guess I will never know.

spring applies pressure on wood before blowing out and splintering the backside of the cutout. wood dust also clogs the cutting teeth.

Made one hole through 5/4” decking spring came off and blade became extremely dull! If not for wood my mistake but it’s definitely a fight for the second hole!

Very happy with this hole saw, super sharp. Leaves a nice clean hole in aluminum and plastic.

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.