Dry Diamond Drill Bits Set 6 PCs Small Diamond Hole Saw Kit for Granite Marble Porcelain Tile Ceramic Stone Glass Hard Materials (not for Wood) Round Shank 1/4, 5/16, 3/8, 1/2, 9/16, 5/8 inch

Using my hand drill, I had a hard time getting these to drill through some (admittedly touch) ceramic pots. When put in my drill press, however, these go through just about everything like a knife through warm butter.

I used the product right away and it stood the test.

I had to drill sixteen 1/4” holes and other bits I used failed. I ordered a 10 pack of these and only went through two bits. They saved me a lot of time and money. After other diamond bits I used wouldn’t go through the porcelain tile I figured I had to order a ten pack to drill the 16 holes I needed. But only had to use two of the ten bits. Excellent purchase.

I did what is was meant to do.

I expected sizes in inches, but they are metric sizes, the largest one too small for intended project. I will keep them for maybe another project.

This product was exactly what I was looking for. Haven't had a chance to use them yet but am looking forward to.

I only want to mention, to the person that used these with water and didn't like the result; well they are dry bits stuffed with wax to keep them from overheating. Thats all. Sorry for you bad experience.

Price

Las brocas funcionan bien hacen hoyos perfectos aunque no creo que sirvan para hacer muchos hoyos. Pero satisfecho

Had to drill in to porcelain tile that would chip and shatter with traditional drill bits. These cut threw with zero problems. I would spray a little water while drilling to extend the bits life. Over all, good value

I’m pretty happy with this purchase so far. I’ve Used the same tip 3 times and seems to be holding up. Used it to drill through porcelain with ease.

Was barely good enough for one hole

Drilled a hole through 1/2" marble to mount holding fixture for glass shower wall.