Ratings & Reviews for Kobalt Diamond Core Drill Bit 1-in Dry Diamond Core Drill Bit for Stone
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers praise the drill bit for cutting cleanly through tile, glass, and porcelain without chipping, with most reporting excellent results on demanding projects. Many highlight durability under proper use, noting minimal wear after multiple holes when water cooling is applied. However, some report premature failure including bent shafts or twisting after few uses. Success depends heavily on technique—starting at 45-degree angles with low RPMs and steady pressure yields consistent performance. Despite some quality concerns, most customers who followed proper methods found it reliable and plan future use.
Customer review summary generated by AI, including incentivized reviews.Good drill bit
Would RecommendOne I've used and it was great, haven't used the others yet. Quality seems high
From Diamond Core Drill Bit 1-3_SLASH_8-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Works, no extra stuff needed
Would RecommendWorks, works, works. Edge stayed sharp, is still sharp. High value
From Diamond Core Drill Bit 1-1_SLASH_4-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Good
From Diamond Core Drill Bit 1-3_SLASH_8-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Tile drill bit
Would Not Recommendwent through porcelain tile like butter.
From Diamond Core Drill Bit 1-3_SLASH_8-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Drill bit
Would RecommendGreat drill bit
From Diamond Core Drill Bit 5_SLASH_16-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Does require a steady hand
Would RecommendEasy to start hole even without guide bit
Verified Purchaser
Drill that Tile!
Would RecommendHad to drill some tile that was part of our backsplash to mount our new above the oven range microwave and there was no existing mount from the previous one! Made quick business of it! Nice and easy!
From Diamond Core Drill Bit 5_SLASH_16-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Perfect
Would RecommendExactly what I needed to make my countertop water filter system!
Verified Purchaser
Great service & Great recommendation
Would Not RecommendThis drill bit worked as the Lowes' associate told me. Worked great on drilling 4 different items.
From Diamond Core Drill Bit 1_SLASH_4-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Useful for many materials.
Would RecommendVery durable for price point.
From Diamond Core Drill Bit 1_SLASH_4-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Thank you for your review! We're glad to hear you found the bit durable and a great value. We appreciate your feedback and thank you for choosing... Read More
Diamond Core Drill for Bathroom Remodel
Would RecommendUsed it to help me put tile in my new bathroom. This tool is really helpful and seems to be of good quality. I'm working on the bathroom all on my own and my wife picked out the most difficult tiles she could find, of course. But this little thing has been holding on great.
From Diamond Core Drill Bit 2-1_SLASH_2-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Thank you for the 5-star review! We're glad to hear the core drill bit has been holding up well and helping you get through your bathroom project... Read More
Diamond Drill for Bathroom Install
Would RecommendUsed it to help me put tile in my new bathroom. This tool is really helpful and seems to be of good quality - as i haven't destroyed it so far.
From Diamond Core Drill Bit 1-1_SLASH_4-in Dry Diamond Core Drill Bit for Stone Verified Purchaser
Thank you for the 5-star review! We're glad to hear the drill bit has been helpful on your bathroom tile project and is holding up well so far. W... Read More
Thank you so much for the 5-star review! If you ever have any questions or need anything, we’re always here to help!