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Internet # 321388722

Model # 10470

Store SKU # 1008087247

5/16 in. Diamond Hole Saw for Grinders

  • Cuts through tough porcelain, ceramic and glass
  • Ideal for cutting 5/16 in. holes
  • For use with grinders does not require water cooling
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Product Details

About This Product

QEP's 5/16" Diamond Hole Saw for grinders is up to 50% faster and lasts at least 12X longer than a drill attachment. It is designed for easy, fast and accurate cutting of porcelain, ceramic and glass tiles. It features a special diamond grit edge for faster and smoother cuts, and does not require water cooling.


  • Designed for fast and accurate cutting of porcelain, ceramic and glass tiles
  • For use with grinders, ideal for cutting 5/16 in. holes
  • Does not require water flow for cooling
  • Features superior diamond grit edge for faster and smoother cuts
  • Up to 12x longer life than standard hole saws, up to 50% faster than a drill
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Product Information

Internet # 321388722

Model # 10470

Store SKU # 1008087247



Plate depth (in.)


Plate Width (in.)



Color Family


Flooring Product Type

Tile Tool



Operational Surfaces

Ceramic, Porcelain, Glass



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Customer Reviews

5 out of 5

  • 5 out of 11 reviews
  • 100% recommend this product
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Showing 1-10 of 11 reviews
Solid hole saw
This diamond impregnated hole saw from Qep works exceptionally well on tiles, ceramics, and glass. The best thing about it is how well the diamonds are bonded to the drilling edge. I have yet to see any evidence that the edge has lost any diamonds. Also, the finish on the hole saw itself is durable. As is the overall construction. There’s really nothing negative I can think to say about it. It has a one year warranty to cover defects and is made in the UK. I can’t say whether the claim it is 50% faster is a valid one, or what exactly they are comparing it to with the claim, but I can say it performs like a high quality professional grade hole saw. My profession involves drilling with traditional hole saws, so I cannot say how well it’ll hold up being used every day, but QEP is a solid brand and I’d be surprised if it doesn’t hold up like a professional tool should. Definitely worth giving these a try and, if you are a DIYer doing renovations or upgrades to your bathroom, kitchen, etc, you should definitely check these out. Using diamond tipped hole saws will make your work go faster and easier.
  • Recommended
Fast and clean cutting hole saw
This hole saw cuts very fast. Installs easily on the grinder spindle. My grinder spanner wrench opening will just catch the flats on the hole saw to tighten and loosen it. The grinder tool allows for much better control than hole saws for a handheld drill. The hole it cuts is very clean. The instructions are very small print. Simply start cutting by tilting the hole saw against the surface of the tile and then lift up to level for the final precision cut. The best part is that no water is required. There is a lot of fine dust produced so wear PPE.
  • Recommended
The QEP waxDRY 5/16 in. Diamond Hole Saw for Grinders arrived today and I couldn't wait to try it out. I had a scrap piece of tile. Secured it down to my bench. Hooked the bit to my grinder and went to work. I cut the hole using only the weight of my grinder for pressure. It said water was not needed,so I did not use any. The hole was cut very quickly and did not do any damage to the tile. I do recommend this diamond saw.
  • Recommended
Excellent product!
The Xstreme Pro-Series waxDRY Diamond Hole Saw by QEP is made in Asia and Europe. This Hole Saw is made with superior diamond bonding. An advanced technology bonds diamond grit to the chrome alloy steel base to produce a 12x longer lasting tool. Caution ⚠️ molten wax may drip or splatter during and after use. Always wear the proper PPE. Make sure to disconnect the grinders power source before affixing or removing the Hole Saw The manufacturer says the Hole Saw cuts 50x faster than a drill. It does a very clean job leaving a smooth cut. Start your cutting at 5° to 30° gradually moving side to side eventually coming to 90° upright. Like any Hole Saw there will be dust, so ventilation is highly recommended or use a vacuum to control dust. QEP hole saws are ideal for cutting holes in ceramic, porcelain and glass tiles with minimal water use. The manufacturer offers a limited 1 year warranty against defects and craftsmanship.
  • Recommended
  • Verified Purchase
So much easier than a drill, which I would have gotten sooner.
  • Verified Purchase
Excellent the best one
  • Verified Purchase
Yep, this bit is used on a 4" mini grinder....
Yep, this bit is used on a 4" mini grinder. Much faster cutting than the drill bit type. 5 stars
  • Verified Purchase
This drill was easy to assemble, lightweight and quiet. I'm...
This drill was easy to assemble, lightweight and quiet. I'm really pleased with the battery life and was able to use the drill for over an hour of heavy use without having to charge
  • Verified Purchase
I did love this diamond hole bit. I used it...
I did love this diamond hole bit. I used it for drilling 6 holes through ceramic subway tile for a shower door. With it being attached to a grinder, it made the work a breeze. I suggest rocking it in a slightly circular motion to help the cut, don’t just press on it, because it can overheat.
  • Verified Purchase
Showing 1-10 of 11 reviews