Features:

  • PREMIUM QUALITY, LONG LASTING Diamond Hole Saw Drill Bit Tool Set in Elegant PU Zipper Storage Case. High Density Poly Insert Included. You can use it as a guide to keep the hole saw in position.
  • Diamond Drill Bit Tools 10 Piece Set 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 3/8, 1 1/2, 1 3/4, 2 inches
  • BUY AS A SET and SAVE OVER 80 Percent on MOST POPULAR 10 Sizes. Having these sizes available will help you cover almost all of your applications.
  • Our hole saws are taller than most competitors. You can drill through thicker materials with our tools. Shank size is 3/8 inch for common drills (corded electric, cordless rechargeable, upright, other rotary tools)
  • EXCELLENT RESULTS in Granite, Ceramic & Porcelain Tiles, Glass, Marble, Slate, and many types of Stones. No need for pilot drill, use the insert us guide.
Gets the job done well on the cheap.

I was skeptical, as this is a 40 dollar set of diamond bits for the price of one name brand bit at Lowe's. I have made about 6 cuts in 1.5" granite with the 2" bit with no signs of it slowing down. For the cost, that will do just nicely. Keep them wet when cutting and I expect you will get some decent mileage out of them.

Way better than other inexpensive sets

I bought another rather inexpensive set recently, and the "diamonds" washed off immediately drilling the first hole through soft sandstone. These are much sturdier. I drilled a total of about 10" through sandstone using the first bit (1.75") and the bit held up very well. Obviously these aren't what a full-time granite driller should buy, but for the homeowner who has occasional reasons to cut holes in stone, these are perfect.

Good quality

Took some practice to cut holes in wine bottles for lights, but once I had it down I was popping these things out right and left! Only drawback is that the glass can get stuck IN the bit... and I can't remember if there's a back poke hole to pop the stuck ones out...

great bits

Really happy with these bits. Used one to cut through some pretty hard tile with no problem.Bought the Drilax adjustable guide which works pretty well but had to clamp it to the tile as the suction cup did not hold.

Fastest Cleanest stone drill bit I've found

The last time I drilled a hole in 2" of granite it took 15 minutes. With these bits it took less than 2 minutes to go through. The hole was clean and the granite did not stick in the bit. I used it for a sink top that the contractors messed up on during our renovation, and now have a terrific looking sink for my outdoor kitchen.

Worked very well on granite for me.

Wanted to drill a hole in granite for a vessel sink. These worked well, although the granite was a little deeper that the saw depth. Was able to take part out and then finish. After I finish building the vanity, I'll use a different size for the faucet. Very pleased.

Did the job just fine

Had to enlarge 3 pre-drilled holes on a granite bathroom vanity from 1 1/8 inch to 1 1/2 inch to accomodate new faucet. Drilled a 1 1/2 inch hole in a 1x4 piece of pine to use as a guide and clamped it over the existing hole. Once the cut is started I removed the guide and sprayed with water as I drilled. Cut pretty well, but don't push too hard or it heats up the drill motor. Took about 15 minutes to cut 3 holes. Some wear on the bit now, but would probably cut a few more holes. Well worth $40.

Very nice set for the money

Very nice set for the money. Plenty of sizes to choose from and the carrying case is very nice. I used one of the smaller drill bits to drill a hole in an old Mason jar to make a lamp. The Mason jar happened to be the liner of the inside of an older water cooler bottle. I was happy with the ease and speed that the drill cut the glass.

Good Drill Bits

These are a decent set of hole cutting bits. I used mine to cut porcelain tile for water and drainlines for a bathroom floor. I wet cut all the holes and had no issue getting through the porcelain. I did crack my first tile but that was because I was using too much down force. After that I took it easy, spending maybe 5 minutes per hole drilled. Also it is helpful to make a template before drilling because these bits will travel on a smooth surface. They are a good set of bits and helped me get my project done. I'm glad I purchased them.

Use a template if possible, keep 'em wet, take your time.

I was pleasantly surprised how durable they are! They look delicate, as in the diamond coat looks thin, not chippy like concrete core bits might. However, I cut 4 holes with the same bit through thick porcelin tile and 1/2 inch backer board without a hitch, and no sign of wear on the bit. Made a template from a piece of 1x6 pre-drilled through with wood bit, clamped it to tub deck, used regular household spray bottle to keep the hole wet and bit cool throughout each hole drilling, steady but light to moderate pressure on drill, cruised right through each hole. Dont get greedy on the downward pressure or stingy on the water. Again, no noticeable wear on the bit after 4 holes. Although I did not experience any slipping, the completely round shanks might be improved by having facets on them, but no problems this time around.

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