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1-in Wet/Dry Diamond Core Drill Bit for Stone

Ratings & Reviews for Kobalt 1-in Wet/Dry Diamond Core Drill Bit for Stone

3.9
191
Review
 3.9 out of 5
192 Reviews


69% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

This diamond-coated drill bit performs well for drilling holes in ceramic, glass, and tile materials, but requires careful technique. It works best with water to keep the bit cool and clear debris, though dry drilling is more difficult and can cause faster wear. The bit can be challenging to start and keep steady, especially on smooth surfaces, but using a jig or angling the bit initially can help. The bit's durability varies, with some customers reporting multiple uses and others finding it wore out or bent after just a few uses, particularly on thicker or harder materials. Overall, with the right technique and patience, this diamond bit can create clean, chip-free holes in a variety of ceramic and tile surfaces, though for more demanding applications, a higher-quality bit may be required.

Customer review summary generated by AI, including incentivized reviews.
192 Customer Reviews

Done in One (hole)

Would Not Recommend

This bit's hollow shaft bent halfway through 5/16" thick ceramic tile, rendering it useless for a 2nd hole, same as described by a user 1-year ago. Very disappointed, particularly as it was recommended by the department's staff member (who was otherwise helpful).

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Response from Team Kobalt

Dear Lowe’s Customer,
We would love to know some details on material you were working with and tool you were using, so that we can better unders...

Team KobaltSeptember 12, 2023

Kobalt-Lowes

Use this bit for porcelain tile

Would Recommend

Worked great, good price

July 7, 2023
From 1_SLASH_4-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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Beware of Cobalt diamond drill bits.

Would Not Recommend

Product did not hold up At all or as described on the the packaging. Initially I bought two “Just in case”! Well I needed the second one and had to return for a third one! They all failed, two which broke off in the hole clogging the hole I needed to install an anchor bolt. I had holes to bore and had to finish them off with masonry bit using brawn in lieu of a sharp bit.

June 26, 2023
From 5_SLASH_16-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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Response from Team Kobalt

Dear LOWE’S Customer,
We would love to know some details you experienced to evaluate the rating you provided. Please give us a call at 833-514-...

Team KobaltSeptember 12, 2023

Kobalt-Lowes

Logan is great

Would Recommend

Logan is always right on time and has a great smile.

May 2, 2023
From 5_SLASH_16-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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drill press maybe?

Would Not Recommend

without a "starter" pilot hole, this will not work. Might work with a drill press, but not with a hand drill

March 19, 2023
From 1-3_SLASH_8-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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Response from Team Kobalt

Dear Fred,
We are sorry to hear that you had trouble with your hole saw. We would like to discuss the situation you had and assist you with a so...

Team KobaltMarch 30, 2023

Kobalt-Lowes

No Issues at all! KNOW what your doing!

Would Recommend

I have drilled 6 holes in porcelain with this bit so far and it looks the same as it did out of the package. The bad comments are from people who have no idea of the concept of drilling in concrete and tile...sorry not sorry! Put your battery screwgun on LOW speed and have a squirt bottle of water ready...the bit must remain COOL during drilling, and that's what the water is for. As soon as you break the surface of the tile by drilling on a slight angle, have someone squirt water on the bit th...

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Awesome at drilling throug ceramic tile already up

Would Recommend

Great product! Drilled hole in tile as described.

February 28, 2023
From 5_SLASH_16-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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Worked great

Would Recommend

I think the negative reviews are from people who didn’t know what they were doing because this worked perfectly on porcelain tile. Start at high speed at 45 degree angle and gradually move to straight on. Spray consistently with water while drilling and clean out the hollow bit too. Drilled 8 holes and could have continued drilling with no problem

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Response from Team Kobalt

Thank you for your review Laurel, also for being so helpful on the instructions of use. We are glad you had a great experience with our hole saw. ...

Team KobaltMarch 30, 2023

Kobalt-Lowes

Return process was easy

Would Recommend

Never actually used the product, I found my old one

December 30, 2022
From 5_SLASH_16-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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Buy extra bits when drilling tile!

Would Recommend

As I mentioned in my review of the larger size bit this design was able to accomplish (with a lot of time) what my carbide bit failed at (again not sure if I used it incorrectly or it was the wrong tool for the job). Partly I was very cautious as I didn't have the time to risk ruining my only other bit and have to run to the store and get more bits (and honestly they should be able to make more than 1 or 2 holes before wearing out). But ultimately this bit got the job done with enough patience...

December 28, 2022
From 1_SLASH_4-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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Go slow and use water

Would Recommend

I was glad that I bought this bit along with the carbide ones because the carbide ones started out great but in the end I had to use the diamond bit to finish the holes. I did go slow and use some water both to cool the bit and clear out the hole as I went. These seemed to take longer to drill but ultimately got the job done.

December 28, 2022
From 5_SLASH_16-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
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Great product

Would Recommend

High quality and a great product, I would recommend this product

December 28, 2022
Verified Purchaser
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