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 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.

I purchased a Carrara marble soap dish for my shower not realizing that it had no drainage hole. So I learned on you tube how to drill a hole in the marble. they recommended a new bit for each hole to be safe. As it turned out one bit was sufficient for the three holes I drilled. Good durable product.

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.

Bought these to put 1/4 inch holes in quartzite to hang a range hood.I had attempted to use a natural stone bit - which did not work. I then tried these, and they worked great.One bit would successfully make on hole in 3/4 inch quartzite. The bit would be useless after that - it would either snap in half or be fully dull. I used 8 bits to make 8 holes.One word of caution is starting the process with these types of bits - you need to hold the drill at about 45 degree angle to get the bit cutting into the stone, then slowly level it out. Its a bit tricky if you are trying to line up markings - however, if you don't apply much pressure starting out, and let the bit grab, it works great!Definately would recommend and buy again.

The media could not be loaded. Delivery was great, fast on time as advertised. However the bit it self was horrible, as we all know these bits are quite expensive at $17-$23 per bit (Milwaukee), I decided to try these as I am working on a big project and need to drill 30 holes min into each restroom, the tile I need to drill through is a lot harder than the small bathroom tile in the video Review I’ve linked here. Let’s just say this bit could NOT finish the job in this soft tile. Don’t waste your money.

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.

Bought the 2-in hole saw to cut through 1/4-in glass. I was working vertically, so didn't have gravity on my side; took me probably 7 minutes to cut through the glass with limited chipping at the end. Great value!