Diamond Drill Bits Set, 10 PCS Diamond Hole Saw Set, Glass Drill Bit for Ceramic Tile Porcelain Marble Granite Stone Bottles

These work really well on gel coat and fiberglass! Did some major work on my bass boat and used the 1, 1 1/2, and 2 inch bits. They cut through the gel coat and found fiberglass like butter. Impressed!! Not sure how long they will last, but the purchase was worth it…even if just for this project!! NO gel coat cracks!!! Much better than traditional hole bits!!!

Worked very well for my needs. I'm sure there are better bits out there, however, for the price point and quick delivery you can't go wrong. I drilled holes into stones to make drawer pulls on a shop bench. Worked great! Would recommend this product.

Great product for the price! Does it job well. I use it to drill holes on vases.

I bought these drill bits to add drainage holes to a small collection of ceramic and clay pots that I've accumulated over the years. Some are small - think 2" individual cacti and succulent pots-- a few in the 8-10'" range, and one 16" monster with walls an inch thick. I'm happy to report that all now have cleanly cut drainage holes, and that it took no more than a minute each for all but the big one, which nonetheless took only a few minutes with the one inch bit. It's crucial to follow the two pictographic instructions: 1) Start the hole with the bit at a 45 degree angle to the work surface and once it "bites" return to 90 degrees, and 2) keep the bit wet. When first starting, keep the drill speed low, and use both hands to hold it in place, as the bit will want to walk. I gave these 3 stars in the durability category only because while the 1" bit did its job, it is now completely worn out and in the trash. That said, these are inexpensive, they work just fine for my needs, and I wouldn't hesitate to buy them again.

Very good product, this diamond blades are the best that I tried. I would recommend it to anyone looking for this type of drill diamonds bit.

The drill bits work fine for small jobs and soft materials like ceramic or glass. There are many sizes in the set, which is nice. But they don’t last long — some bits got dull after just a few uses. They also heat up fast if you don’t use water. Overall, it’s an average product. Good for light work, but not for heavy or frequent use.

Use these bits to drill through glass ceramic China, etc., and really had no issues at all Would recommend

Top quality and a great design. I was able to use them in both my cordless and corded drills with ease. I used them to drill holes in acrylic and glass wall cubes from the 70's to put lights inside them for Halloween and Christmas decorations. Multiple sizes for multiple projects. I bought more sets as gifts for Christmas this year for other do it yourselfers as they are a great value for the money.

For $7 you can’t complain! I got these bits so I could drill into an old candle pot that I had been using as a plant pot, but it needed a drainage hole. Went write through with ease, but I recommend sanding it first before drilling so the stone tip bit can grip it!

Brocas de excelente calidad y muy utiles

Good for home use

Great tools for cutting holes in Ceramic Pots for Bonsai