Features:

  • ❶ Diamond Hole Saw is made of HIGH QUALITY NATURAL DIAMOND SAND, which is solidified by special enhanced electroplating
  • ❷ NICKEL-PLATED DESIGN, with a diamond dust coating offers diamond hole saw a superior performance and cutting strength
  • ❸ NO Tremor phenomenon, SMALL incision resistance and FAST hole speed, EASY chip evacuation, ensuring you a nice experince when using diamond hole saw.
  • ❹The package comes with 15 SIZES of Diamond Hole Saw - 6/ 8/ 10/ 12/ 14/ 16/ 18/ 20/ 22/ 25/ 26/ 28/ 30/ 40/ 50 mm, Drilling holes for Glass, Tile Bottles, Blocks Jars, Fiber Glass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone (especially for glass AND tile)
  • ❺ OPERATION of the Diamond Hole Saw - Start the hole diagonally, make a round braid and then hold drill straight. Water is required for lubrication when drilling.
... Stone Drill Bits has 15 different sizes that can satisfy many work situations

These Granite Stone Drill Bits has 15 different sizes that can satisfy many work situations. The size prints on the body of each drill bit which let you tell them very quickly. When I test it on a tail, the drill bit works very well. It just drills through the tail without any feeling. One thing I should mention is that these drill bits do not have a central bit to fix position. So, make sure follow the instruction and it still an easy job. The price is reasonable and does not miss it.

Slate is an easy material to cut

When you think of hole saws, you typically think they have a pilot bit. Not so on these, so in order to use them you'll need either a drill press or a template. I needed to drill a 1" hole in a slate floor. Slate is an easy material to cut, and the diamond bit went right through it. What I did first was take a piece of scrap plywood, drill a 1" hole in that, and then use that as a template to center the diamond bit. Voila--no pilot hole or bit needed.

These bits have super thin walls

These bits have super thin walls, but this is actually a good thing when it comes to drilling tile/stone because the thinner the walls of the hole saw, the less actual material that has to be remove by the cutting surface. My only complaint is that there is no flat edge on the shank, its just plain round.

Perfect for ceramic

Years ago we had to drill a hole on melt-texture ceramic samples in our lab and it was done with a wood stick as a drill bit on a drill press with hours of work. With this tile hole saw I made a hole on my flower pot with a cheap handheld drill in minutes. I had to spray with water to cool the bit in the process but the result was perfect. I avoided the center thicker part but after the work was done I knew I over worried.

Good Purchase.

Used mine on ceramic tile with great results. Because there's no center bit to stabilize the hole saw, you need to be careful when starting the hole. Once you get some bite in the correct location then you can apply pressure to finish the cut. These are well-made hole saws that maintain cutting effectiveness after multiple uses. Also, a wide range of hole sizes are included. Good purchase.

It worked!

I wanted to turn a glass jar...a big one, into a beverage dispenser. I was terrified of cutting a hole in glass. This proves the old phrase "right tool for the job". Cut the perfect hole in less than a minute. Now to figure out what else to make!

Five Stars

Worked very well! Drilled a neat hole successfully in minutes.

Well worth the money

I needed a small hole in a round glass ball, I tried a carbide bit but had no luck. This had the job done in a couple of minutes. I also used this on ceramic tiles, it worked fine, cut smoothly and I didn't need to apply a lot of pressure. Another plus point is this set has many different sizes for future use. I used water and oil with it to lubricate and cool down. It’s a good quality set, well worth the money.

Five Stars

it is really good product, I'm ready have my problems result, thanks

They work and are a good bargain.

Others have noted that they are cheaply made but a good bargain for the price, and I feel the same way. I used one to make a 1/2 inch diameter drainage hole in the bottom of a 10 inch ceramic flower pot. The pot was white glazed porcelain and not very thick. I don't have a drill press so I used my cordless drill and started the hole at a slight angle. The bit wobbled until it got through the glaze and then I was able to straighten it out and cut a clean hole with water lubrication and a slow drill speed. I used only a slight pressure to avoid cracking the pot, and I was pleased with the result. FYI the shaft diameters of the hole saws vary from about .2 to .33 inches and don't seem to be in any particular order; sometimes a hole saw has a smaller shaft size than the a hole saw that is smaller.

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