Ratings may include incentivized customer reviews.
What Customers Are Saying
The diamond-tipped ceramic drill bit generally performs well for drilling holes in ceramic, porcelain, and glass materials, though it requires some technique to use effectively. Many found starting the hole at an angle and using water to keep the bit cool helped produce clean, chip-free holes. However, some reported issues with the bit wandering, wearing down quickly, or struggling with thicker or harder materials. The bit seems to work best for lighter-duty applications when used with care, but may not be suitable for more demanding tasks. Proper technique and patience are key to getting good results.
Customer review summary generated by AI, including incentivized reviews.Return process was easy
Would RecommendNever actually used the product, I found my old one
Verified Purchaser
Buy extra bits when drilling tile!
Would RecommendAs 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...
From 1_SLASH_4-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
Go slow and use water
Would RecommendI 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.
Verified Purchaser
Great product
Would RecommendHigh quality and a great product, I would recommend this product
Excellent quality
Would RecommendI used another brand of this same drill bit and this drill bit was far superior as it did not become dull after drilling the same amount of holes through tile.
From 1_SLASH_4-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
Not for Procelain
Would Not RecommendPurchased the 5/16 bit on 12/3/22. After 3 holes it was no good. Thought maybe that one was just defective so I purchased another; same result. Purchased 3 in total and only got 9 holes done. Where is the quality control. Don't sell it for Procelain if it only cuts glass and ceramic. I'm so disappointed! $5 plus per hole...ridiculous!
Great deal for small jobs
Would RecommendWorked pretty well. Seemed like it was gradually wearing down after about 6 cuts, but that's all the use I needed to get out of it, and it was 1/3 the price of some of the other brands.
From 1-3_SLASH_8-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
Will Easily Cut Through A Ceramic Sink
Would RecommendI needed it to open up the slot in the top of my old bathroom sink for the new faucet drain handle. My regular metal files wouldn't touch the ceramic basin but this thing easily cut through 1/2" of solid ceramic with ease. I used a small amount of water to keep it cool and help clear the dust and it worked as advertised.
Verified Purchaser
mnichols
Would RecommendOnly cut 2 holes and it was shot. I definitely wouldn’t recommend this product. I’ve tried HD and Habor Freight bits and honestly they must all be made by the same company. Not recommended.
From 1_SLASH_4-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
We would love to know some details on the material you were cutting so that we can better understand why our hole saw did not perform to your standar...

Mnichols
Would RecommendMade cutting the tile very easy. Long lasting diamond saw really helped.
From 1-3_SLASH_8-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
A little hard to get started.
Would Recommendi had a little difficulty getting the bit started but once I did it worked fine.
Verified Purchaser
Difficult to use
Would Not Recommendthis is a very hard bit for DIY'rs to use. there is no center drill which allows the drill to just skate across the tile. A small center drill would be most helpful to guide. I realized that in order to use you must use angle the bit and gradually turn it up straight. Most will find this difficult to use.
From 1-1_SLASH_4-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser
We would love to know some details on the material you were cutting so that we can better understand why our hole saw did not perform to your standar...

Worth the cost
Would RecommendUse it to cut through many projects and still working great.
From 1-3_SLASH_8-in Wet_SLASH_Dry Diamond Core Drill Bit for Stone Verified Purchaser

Dear LOWE’S Customer,
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