1/8" / 3mm Diamond Hole Saw Drill Bits, Glass Tile Hole Saw - Pack of 15

I used this to remove a screw on which the head had rusted and crumbled. It was used to mount a shower slide bar and we didn't have more replacement tile, so I needed to get the screw out. I measured the broken screw's mate's diameter and determined that these 6mm hole saws would work.Using the hole saw, I drilled through the cement backerboard around the screw. I went pretty slow as I wasn't able to use any water to cool or lubricate the saw. Probably took about 10-15 minutes. The screw came loose just as the hole saw broke, and lodged in the hole. After removing the problem screw, I just used a larger-diameter screw to bite into the inside of the broken hole saw and pulled it out.I was pretty hard on the saw, putting a good amount of force on the drill, and for the price I would consider this a consumable and a good tradeoff for getting the job done. I can't speak for other use cases but for mine, it worked very well and the price meant my DIY repair was a good value.

Be aware, there is no pilot bit for the hole saw, just the 2.5” cutout. So you will want to make a hole in scrap first to use a a guide otherwise the bit will walk outside of your desired location.Other than the frustration. I used it 6 times in travertine and had zero issues with cuts. Used both as wet and dry and cuts were nice and properly sized. Didn’t need anything long term, just a small project.

The media could not be loaded. See my video for details.This 13mm (1/2 inch) hole saw drill bit worked perfectly for drilling one hole in my quartz countertop for filtered water. As you can see in the video, I made a drill guide by using a stick of wood with a 13mm hole. I placed this guide in the exact location needed for the hole. After I was about half way through the countertop, I removed the guide and continued to drill. I would splash the hole with water to keep the bit cool and remove cutting debris. The bit successfully cut through the quartz countertop and appears to have enough grit left for several more holes. Since only one hole was needed, I did not evaluate it for multiple holes, or drilling until failure. This is a good deal for two bits for a relative low price. Other drills appear to have more diamond on the surface of the bit and have a much higher price, but for me, I only needed one hole. I'm very happy with the results and would recommend this bit for small "one off" jobs.

I'm a remodeler, and purchased this hole saw to cut a hole in tile for a shower valve. Being so large, I wondered how I could get it to accurately cut a hole in my tile without it wandering and scuffing up the surface. I did three steps which made my hole cutout perfect. First I cut a hole in a piece of backerboard using the hole saw. This piece was to be my cutting guide. Then, I cut a piece of sponge and put it inside the bit so that it would release water and cool the bit as I drilled my hole in the tile. I positioned the backerboard on the tile and clamped it there. Then I soaked the hole saw and sponge in water and proceeded to cut the hole in the tile. The sponge and water kept the bit cool and the backerboard template kept the hole saw from wandering. It was a perfect cut! This bit is by far the most economic way to cut a clean hole. The bit is already much duller that when new, but it will work great for several cuts, but not many more than that. Keeping the bit wet and cook is essential- otherwise your bit might not last more than one or two holes. There are many others costing 10x more and made for daily use, but my use was one or two times only, and for that, this bit was perfect.

I ordered the 35mm to drill aquariums to accept bulkheads. I was able to drill 8 10g tanks with a single bit. Obviously the glass is pretty thin on small tanks (~1/8”) but I’m pretty pleased that I accomplished it with just a single bit. I figured they would dull quick enough that I’d use up the pair for my project so that was a pleasant surprise. I made a quick locating jig to help with alignment and getting started on each tank (because who wants to make the same measurement 8 times!) and then once the glass was scored I removed it and finish the holes freehand.

works okay for small, occasional jobs, but don’t expect professional-grade performance. I used them on ceramic tile and some glass, and while they did get the job done, the bits wore out fairly quickly — especially if you drill more than a couple of holes per bit.The cutting is not very fast, and the bits tend to heat up easily even with water cooling. I also noticed some inconsistencies in build quality across the set.Overall, it’s a decent value if you just need to do a few simple DIY projects, but I wouldn’t recommend it for heavy-duty or repeated use on harder materials like porcelain or marble.

****** update: used another drill bit today and it worked perfectly, so I updated my review! It's worth the money seeing how Lowe's and home Sept want trip the price for one bit!******** These drill bits did their job but they were a little wobbly while drilling into my ceramic planters! I had them aligned straight but at a slightly higher speed (NOT FAST) it wanted to wobble and made my hole a little uneven! This was for my ceramic pots so the hole size was not a big deal but in more delicate needs it might be. I loved that I got 5 drill bits and I will use them all for my pots. I would buy them again

I needed to cut TWO (2) holes in porcelain tile for tub faucet valves. This bit handled the job, but just. After the 2nd hole, the abrasive was essentially gone, and I would not want to use it again. Still, for my need, it was a better value than a much more expensive big name item which would have lasted but never been needed again. The cuts were smooth and clean. I used a scrap of Kerdi-board into which I had drilled a hole w this bit. Light pressure held the foam board in place on the tile, contained the water added into the cut-out void, and make the drilling start and finish easily. No skittering.