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!!!

Why I didn’t think about this before? Would have saved me a ton of trouble. This is now a life changer for sure. Works like a CHARM. I attempted to make holes on ceramic vase with this tool, and it just works wonderfully. Definitely recommended to use running water, set up bit at an angle and slowly drill until you get a purchase. Once you see the indentation, speed up your drill and gently allow the tool to cut. Does a nice smooth job. Very pleased. Took me literally two minutes to make a nice hole.

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

Needed to drill hole for RO system. Heated one time. Use store ones for over $35 a piece. This one worked great

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.

Hi, this is Lumpy once again with a review of the Diamond Drill Bits Set. I was able to use the bits over the weekend cutting into ceramic plates in order to make a kitchen clock. I drilled without any issues into the ceramic plate, set my battery clock, and now just need to attach the kitchen tool items(miniature) that reflect the hour for the clock. I used a spoon for 1 O'clock, an apple for 2 O'clock ect. These Bits are a must!

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.

I used these to drill a hole in brittle resin on a garden fountain. I was very afraid of the resin cracking or chipping badly with regular drilling methods. These worked perfectly, no cracking or chipping. Just what I needed!

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

AMAZINGGGGGGG ITEM...BETTER THAN EHAT I HAVE AND YOU CAN BEAT THE PRICE ITS TOO GOOD FOR THE PRICE. IN SURPRISED AND IN AWE.JOB IS DOBE SO FAST.IN LOVING IT I BOUGHT 3 MORE...THANK YOU

Great tile cutting bits, start them slow and on a slight angle to get started then straighten bit out to make the hole, small amount of water to keep bits from burning up