Features:

  • Package Includes:6mm,8mm,10mm,12mm,14mm,16mm,18mm,22mm,35mm,40mm,45mm,50mm,total 12
  • Durable Life: Senrob diamond drill bit has feature of extremely tough and excellent stability to extend its service life
  • Wide Application:Senrob diamond drill bit is suitable for glass,tiles,stone,wood,granite,ceramic and porcelain
  • Please keep adding water as lubrication when drilling,do not using it on concrete or for depths beyond 1/2"
  • What We Offer:3 months warranty, unconditional replacement or refund if the product is defective in materials and workmanship
Worked great.

These little drill bits work. Had to make the hole in my birdhouse smaller so the big birds wouldn't be able to stick their beaks in and terrorize the little birds. Worked great.

Work great

Helped me add a needed hole for a filter pipe in my acrylic fish tank and a couple other projects. Excellent, clean cut

A good tool at a bargain basement price.

I burned up several carbon steel hole saws cutting hole through the concrete/wood fiber siding of my garage. A complete 12-piece set of these diamond coated hole saws cost less than a single replacement unit in the carbon steel set. The diamond bit cut through the siding in a fraction of that it took the steel bit. Now that my hole sawing task is completed I still have the tools I need if I need them to saw holes again. One tiny criticism: I wish the hole saws had pilot drills. They would be handy but not essential. Also the cutting head could be a bit deeper. AND the shaft could be affixed to the cutting head more securely. It's welded. So far none of the welds have broken but I worry one might if under stress.

Great product, worked like a charm

Drilled a 1-3/8" hole quickly and easily. Squirted with a spray bottle - cut through ceramic tile like a boss. Does want to run away when you start - start at an angle until you get a groove established, then you'll be good to go!

Great deal

Go slow, use lots of water, not the highest quality...but the price is INCREDIBLE! I can still get 8 to 10 cuts per bit before they wear out. If you do it dry and get it hot you will burn them up in 1 hole.

... when drilling through my quartz slab and they worked beautifully. Make sure you use water when drilling

Had to use that's when drilling through my quartz slab and they worked beautifully. Make sure you use water when drilling!

Works great

I bought these to use to drill holes in bottles. So far I've drilled about 8 holes and have not had a problem. A good investment for a small price.

Big bang for the buck!

Was happily surprised when I saw the quality of this set. Because of the low cost I did not expect the amount of diamonds on the cutting edge. I use these for cutting glass for stained glass projects. They arrived quickly and work very well. I would buy these again. Without a doubt.

Nice clean holes

I've used a smaller and a larger one so far. Both have made several nice, clean, holes, without any reduction in performance. Take it slow, and cool the bit with water regularly, and they work very well.

bought for husband

i bought these for my husband because he needed to drill holes into glass... it worked. I have a happy husband...not just happy wife happy life... happy husband equals happy wife which equals happy life HAHA

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