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Diamond Core Drill Bit Set with Triangle Shank
- Package Include: 9pcs drill bit with triangle shank 6/8/10/20/25/35/50/68/100mm; 1pc 20mm finger milling bit with hex shank; 1pc 50mm beveling chamfer bit with hex shank; 1pc carbide drill with triangle shank
- High-quality diamond particles are used to cover the working surface, providing faster reaming and grinding speeds; vacuum brazing process for higher machining efficiency and longer life
Recommended Machine
- Suitable for Corded Drill, Cordless Drill, Benchtop Drill
- Recommended speed not less than 2000RPM; Faster the RPM, longer the working life
- Please turn off the impact or hammering action
Application
- Diamond drill bits: Dry/wet drilling holes in porcelain, ceramic, tile, granite, marble, artificial stone, etc
- Carbide drill: Provide precise positioning for the diamond drill bit and solve the problem of drifting and walking of the drill bit
- Beveling chamfer bit and finger milling bit: For beveling, enlarging, shaping and grinding existing holes
- Attention: When drilling holes, use 45° oblique angle positioning, gradually vertical and rocking left and right drilling
Irina Kharit
2025-08-09 17:58:35
Good for drilling holes
Rachel
2025-06-18 21:04:39
My husband works doing granite countertops/showers. Everything tile/granite. He said this work perfectly and the holes come out nicely made.
oscar
2025-05-23 18:18:36
Perfect and durable for wall tile and porcelain cuts at a reasonable fast rate
Ebooker
2025-05-12 13:43:00
Had to cut holes in porcelain tile for pipes in a bathroom. This got the job done but those tiles are sure hard. Take your time. What did not happen is any cracking, even on the one that was about an inch from the side and the one that was right up against it. So good there. With no pilot hole, getting started is quite interesting. I might move the the drill press on the next one. Has to be better than the freehand method. I'd say it's a good value but I'm not doing 20 holes. Don't know how long it would hold up. But not sure how long anything could drilling in these media.
Steven
2025-05-04 10:57:32
Cut a perfect 4" hole in my tile for bathroom shower valve in under 10 seconds. Used a sheet of durrock as a template to line up the hole, since it can walk especially with the large hole saws
Gordon Y
2025-04-27 17:36:26
Did a great job. Used water to help and went right through the porcelein tile.
Ruth
2025-04-07 14:17:59
I guess $89 is not a good price for quality. It did the trick, but it took a while and they wore out fast.
T. Thomas
2025-03-23 16:40:28
The bits drill through porcelain tile pretty quickly. Not sure how many holes I’ll be able to drill before the bits go bad, but so far so good.
Allan Hazlett
2025-02-25 12:06:29
Love them
C'est moi Lolita
2025-01-29 15:45:32
Bonne produit
OtiJoe
2025-01-17 10:09:41
Good value for money. Works well.
Martin thornett
2024-11-24 10:49:48
Drilled through code 5 porcelain no problem 👌
sPuTnik
2024-11-15 15:33:56
This review evaluates the “7pc Black Dry Diamond Core Bit Set†made by FOCSTOL.The product was shipped with no excessive or wasteful packaging and is held snugly in a form-fitted hard case. What’s in the box: five (5) dry diamond core drill bits 3/4''(19mm), 1''(25mm), 1-3/8''(35mm), 1-3/4''(45mm), 2''(51mm), one (1) 13/16†(20mm) Finger bit, one (1) slotted SDS mandrel adapter and one (1) padded, hard metal case.First impressions: IT CAME IN A METAL CASE WITH DURABLE LATCHES! I will say that this impressed me right off the jump. My biggest pet peeve is getting a tool kit that has multiple pieces and it is sold with either no case or a flimsy one. I hate trying to adapt some toolbox or Tupperware to suit my needs. I WILL ALWAYS PAY EXTRA FOR SUCH A CASE! It is so nice to pull out a complete kit to “go into battle†and get a breakdown fixed.The overall quality of bits seems good, there is a generous thick coating of diamond abrasive in a heavy-duty steel core bit. ProTip: for small tile work I use a drill press to hold the bit perfectly vertical. For holes into something cylindrical, I use a “Vee†jig in my drill press to hold my round work. Another key element to a clean, easy-to-cut hole as well as ensuring extended drill bit life, ALWAYS use water or oil to cool the bit. Also, it is essential that you don’t “force†the bit into your work – let the bit do its job by providing even positive pressure. Forcing the bit into the work or using the bit dry will excessively overheat the bit and wear off the abrasive coating.Since I am evaluating this product as part of the Amazon Vine program, I am limited to a 30-day window to submit a review. In order to determine drill bit durability and length of life, I intend to monitor this product over the next 12 months. Should anything change over this period, I will update this review accordingly.Cost-effectiveness and value: Overall I am satisfied with the product; it does the job easily and conveniently. Proper care will last quite a few jobs. At a current price of $142.99, I feel that this product is fairly priced for the quality and functionality delivered. In reality, at this price, if you use the kit for one or two jobs it has paid for itself.In summary: the “7pc Black Dry Diamond Core Bit Set†made by FOCSTOL is well made and does the job easily and conveniently at a fair price. I would recommend this product.Pros ðŸ‘:✔ Made from good quality materials.✔ Generous amount of abrasive coating.✔ Includes slotted SDS arbor mandrel.✔ Comes in a convenient padded metal case.✔ Fair price point.Cons👎:✘ None.
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