2-Pack 1" TCT Hole Saws for Hard Metal, Heavy Duty 25mm Tungsten Carbide Tipped Hole Cutters Set with Spring-Loaded Pilot Drill Bits for Stainless Steel, Metal, Iron, and Plastic

I had to drill bigger holes for the strut towers of my car. Pretty thick metal. The blade worked great, cut fast, still in good condition after doing both sides.

I had to drill very heavy thick cast iron. Using it on a lower speed and stopping occasionally to keep the blade reasonably cool allowed it to cut a clean hole in a reasonable amount of time. It still has plenty of life for more cuts. Impressed.

Cut good so far definitely worth the price. Drilled 3 holes in 3/8 plate steel still cutting like new.

Cheap piece of s*** that immediately sheared off. Order three and a half inch to cut through sheet metal managed to get the center drill bit in and then I immediately started sharing. Replacement ordered and it did the exact same thing immediately didn't even get to scratch out a metal ring.

Awesome little kit. I used mine to drill 1/4" aluminum plate and it resulted in a perfect, clean hole without distress to the surrounding area. Only a tiny bit of de-burring was necessary. I used WD40 for cutting fluid with great results. A few holes later, the tool is still good for plenty more. Be sure to use the proper lube/coolant and you'll be happy.

Hole saw worked perfect. The center drill bit is metric though, so don't pre-drill your hole before ordering if you need a precise 4.5" hole, it may wobble a small amount at first if you're used to using a 1/4" center hole drill bit.... For my purpose it was fine.

I was worried this wouldn’t hold up to drilling multiple holes in my shipping container so I ordered the two pack. The first one did the job and is still good as new. Best hole saw I’ve ever owned and I’ve had a few.

This worked great. I had to bore a hole in the frame of a mobile home and the steel was heat treated so it dulled my bi-metal hole saw instantly. I ordered this relatively low-priced carbide tipped saw and hoped it would make it through one hole. It worked great and the teeth still look like new afterward! I did make a couple of modifications to it first. I had to go through some wood siding before the steel and there was a couple of inches gap between them and the back shoulder of this saw is larger in diameter than the hole it cuts so I couldn't reach the second layer to cut the hole. Why did they design it that way? Also, I had already drilled a 1/4" pilot hole and this saw's pilot is 6mm so it wouldn't be held true and people had mentioned snapping off pilot bits. Fortunately I have a metal lathe so I was able to reduce the diameter of the shoulder so it could pass through the first layer and I also drilled out the pilot hole and inserted a 1/4" rod for the pilot instead of a drill bit. Overall it exceeded my expectations.