1/4" / 6mm 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.

I use it on a drill press. Works great for what I bought it for, cutting holes in slate. Tried it with a piece of ceramic wall tile and cuts just fine also. Just go slow and don't push too hard. No problems.

This worked amazing for what we needed it for cut right into tile for my stove pipe for my pellet stove. Would buy it again then recommend it.

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.

Used this and two other sizes for drilling through slate and ceramic tile. Take your time and keep lubricated (I made a dam around the hole with plumbers putty and filled with water). Without a center drill you need to start on one edge and feather the bit flat. Once you get the technique down, the drill works fantastic. 4-1/4" was perfect for cutting the hole for toilet plumbing.

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.

Wish I would have bought this sooner. I hate cutting toilet holes in porcelain tile with a grinder. Frequent cracking with the grinder is greatly reduced. It still is difficult to do a complete hole in the center of a tile without cracking but half holes along edges are super easy. This diamond drill makes everything way easier and produces way better looking results. Also is the exact size needed so no time wasted with layout.

I ordered these because I had an expensive Bosch bit that drilled exactly one hole in the grout line of my bathroom tile wall. When I went to drill the second hole for a towel bar, the bit tip was trashed. So I bought these hoping to get maybe a dozen holes drilled into the tile for things like towel bars, hooks and the toilet paper holder. One of these finished the hole started by the Bosch bit, then was done. So between the Bosch bit and one of these, I got one towel bar installed. Two bits down. I grabbed a new one of these and didn't get through the glazed layer before the second bit was done. These are garbage and I am returning them in an effort to find something that will work. And yes, I was using a spray bottle and spraying water on them as they drilled. It didn't matter. The rough texture on the bit was gone in a few seconds. Also, the bit shafts are hollow so I didn't expect much.

First use broke into 2 you get what you pay for

Etremely recomended. Cuts through tile like butter. Very easy to use, high speed at the start since it does not come with a pilot hole drill bit. Buy with confidence and guranteed.

Percé 2 trous dans comptoir marbre

This hole saw works well. I needed to cut a shower valve hole in a 12 x 12 tile and it did it nicely. I ended up cutting a guide block out of wood, then clamping it to the tile. I submerged the tile and guide block in a concrete mixing pan and filled it with water and had no trouble cutting the hole. It took about 5 minutes to cut at slow speed on a cordless drill. Recommended.

Cuts a very clean hole with water. Made about 30 cuts in limestone so far and bit is going strong!