Diamond Hole Saw Set 15 PCS Tile Hole Saw Kit with Drill Guide from 6mm-50mm /1/4‘’- 2” for Ceramic,Glass,Porcelain,Marble

Rated 5 star but not 100% satisfied. I should have shopped more as I only needed 1 size to drill travertine shower for anchors. The bit did make 4 holes, where others failed after barely cutting a dimple, but the bit is worn and will not work any further. The suction cup guide did not work at all, as the suction is poor at best. Good bits but kit more than needed and guide plate might work for smooth tile but not travertine.

I bought is and I didn't even remember that I did. But it has all the drill bits we will need to drill out the holes in tile. Very useful.

I brought these for my home use on tile and they work good. I will admit it took me a little getting use t them but once i use the first one i got a hang of the amount of pressure and after you’ll need.

Little device helped us stroll holes in our newly remodeled, porcelain tile shower. Practice with this device on scrap tile before you use it on your walls. it works, however, do you have to take it easy at first so the drill bit does not “walk” on you.

Needed to drill thru our brick home and foundation stones to install a new furnace. Was initially impressed at how well the 2" bit went thru the brick, but then it caught and the drill spun, and bent the bit. I thought it was done, but I put the bit back in the hole and carefully bent it back straight (mostly) and was able to keep drilling. Make sure to hold the drill securely! Have to stop every inch depth and chisel out the brick plug as the bit bottoms out at that point. Next hole was through foundation stone (oolite I think) with the 1.5" bit. The cutting surface got gunked up with the dust from the stone and got stuck in the hole. Ended up having to use a bigger bit to drill around the stuck bit and with much patience and difficulty dig it out of the hole. The shank on this bit then broke off, leaving it useless. I was able to put a bolt thru the hole to get a little more use out of it (see the pic), but not ideal. Maybe a setup like a wood hole saw set - with one shank that screws on to all the hole saws would be a sturdier design. FYI If you're drilling a deep hole, the 3/8 collet forstner bit extender does work with these bits, but the shank on these bits is so short that only one set screw will engage the bit. And be careful that screw doesn't loosen so you lose the bit in the hole! If you're looking for a one time use, or just light hobby use, these bits might work, but any heavier use and they are just not up to the task. Hope this helps somebody.

These hole saws do not perform. Would not cut marble as advertised. Didn't get to use them until return date expired. I should have tried them immediately. I would have returned them immediately.Faulty abrasive material bonding. Abrasive was gone in just about 2 minutes of use at proper low speed. The material that the primary underlying surface is made (the cylinder upon which the abrasive is bonded) is too weak/thin as well, and caved in under minimal pressure. I did not realize how low grade this product is. Save your money. Worst product experience yet from Amazon.

Mi primera experiencia abriendo un hueco en granito y funcionó de maravilla.

Let me tell ya, I spent a fortune @ lowes and home depot for diamond hole saws (20-60 each) and they didn't make it through a couple tiles. These (1) bit lasted my whole project and still going strong on new projects. It's a complete set of all sizes for pennieson the dollar. I Bought 2 more sets just to have.

I used it on a bathroom tiling job and it worked perfectly