Drilax 10-Piece Diamond Hole Saw Drill Bit Set with Guide – 1/4" to 2" Sizes for Glass, Tile, Ceramic, Porcelain, Stone, Quartz, Granite Countertop Drilling Kit with Storage Case

good buy. Bit i used worked great to drill hole in a counter for soap dispenser. I was able to use the templet to position the bit and hold water for drilling hole. this gives you most any size you need for a little more than buying one bit. the holder / guild worked good and the zipper carry case is nice and not flimsy. i would buy it again if needed. I used to sided tape to hold guide to counter top and hold water in while drilling. it took maybe 30 seconds to go through 1/2" Corian counter top in a camper.( bits must be used with water ).

These have worked good so far , remodeling our bathroom and I’ve used the 1 3/4 hole saw , drilled five 4” holes through concrete with no issues and will be using to make holes in tile

They drill fine, have tried on tiles and concrete with no issues, keep the water up to it..

Awesome bits and storage case. I was refurbishing an old outdoor table and in doing so I put new tile on its top and needed to drill a hole in one of the tiles for the tables umbrella to go through, they worked flawlessly! I have since used them when retiling my shower, again they worked flawlessly!

I purchased in January 2021 for $44. I actually needed 3 of the sizes that this 1 kit came with. I went to several tile shops, supply houses and looked online and I found that price of just ONE of their bits was more than this set. I figured worst case scenario, I would burn them up, finish the job and pitch them in the trash!2 years later and I have absolutely punished these bits and they haven’t slowed down a bit!I’ve used them on porcelain and ceramic tile, 2 granite countertops and the ultimate torture test was drilling through 3/4 granite tiles. I needed 4 inch round holes that kept cracking when trying to use a grinder. I decided to use these bits to drill multiple holes to make the 4” hole and it worked great!You can use the foam backing pad that holds the bits to CENTER it since the bit itself doesn’t have a centering bit. Get the hole started by holding the foam piece with one hand, fill it with water to keep the bit cool, then start the bit slowly with the other hand. I used a Dewalt battery drill and they worked great. I do keep them cool with water and low RPM’s while using them. I’ve even let a friend borrow them and they are still good.The ONLY CON: They are not deep enough to go all the way through a granite countertop. Bit is too shallow. So you can either start the top and go as far as possible then tap it out with a hammer. Or start the top and go as deep as possible then switch and approach from the bottom if you need to.For all tile including porcelain, just take your time and keep the bit wet and cool and they work and will last! Work great on tile backer board also!Definitely recommend them though!

One of the est cutting drill I've purchased. Cut the size i needed.

I went back and forth deciding whether to assess 4 stars or 3. Here's why I settled on 3:1) none of the bits had sizes marked on them, so I need to measure them with a caliper to ensure I'm selecting the right size2) the one size bit that I needed for the project I purchased this set for had a big glob of what I'm assuming is adhesive affixing the grit to the bit. This made the bit lopsided, and the holes it produced were just a tad too big.So why not less than three stars? Well, for all their faults they do cut very well, and they seem to last a long time. I drilled several holes in very hard porcelain tile, and they penetrated the material very well and cut through very quickly. After the job there is still plenty of grit left. Carbide couldn't even scratch the glaze, and another brand diamond bit barely made a dent, never penetrating even the entire glazed layer of the tile.

Got the job done other types I use would not work as well as these cutters u will be pleased with this product