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Dry Diamond Drill Bits for Granite Glass Marble Stone Porcelain Tiles
High-Quality Tile Drill Bit That You Should Own
Diamond Bit Drilling Steps
BENETTE P HARRIS
Reviewed in the United States on March 4, 2025
Works like a charm on tile floors.
Rajiv
Reviewed in the United States on February 21, 2025
I recently used the Comfylichi 9 Piece Dry Diamond Drill Bit Set for a project involving granite and tile, and overall, they performed adequately. They drilled through both materials effectively, which was my primary concern. The resulting holes were clean and relatively precise.However, there are a couple of drawbacks that prevent me from giving these drill bits a higher rating. First, I was disappointed that they don't have a standard hexagonal end. This would have made it much easier to use them with an extension for drilling deeper holes. As it stands, using them for deeper holes requires some improvisation.Second, while the thicker diamond edges seem like they would contribute to a longer lifespan, they also made it slightly more challenging to drill precise holes, especially in the tile. It felt like there was a bit more resistance.Pros:Effective at drilling through granite and tileClean and relatively precise holesCons:No standard hexagonal end for use with extensionsThicker diamond edges can make precise drilling a bit challengingOverall:The Comfylichi Diamond Drill Bit Set gets the job done for basic drilling in granite and tile. They're a decent option for smaller projects where precise, deep holes aren't critical. However, the lack of a standard hexagonal end and the slightly thicker diamond edges are significant drawbacks. With these improvements, they would be a much more versatile and user-friendly set. For now, they're a solid 3-star option.
Katie
Reviewed in the United States on January 8, 2025
Not sure how this happened, but I received the item not only missing all but 1 bit, but it had been used.
A S.
Reviewed in the United States on January 8, 2025
I just needed to drill two 1/4 in. holes on porcelain tiles for screws. I needed diamond tip drill bit. These were much cheaper than just one brand name diamond tip bit in the local hardware stores. During drilling, I stopped every several second to cool the bit down just in case. I used only 2 of the bits.Basically they did great for a small job that I had and I don’t know how long they would last for longer use?
mike
Reviewed in the United States on January 21, 2025
Title: Versatile Drill Bit Set for DIY ProjectsRating: ★★★★☆Review: I recently used the Comfylichi 9-Piece Dry Diamond Drill Bits Set for a home renovation project, and they performed well. The set includes various sizes, which was handy for different tasks. The built-in cooling wax is a nice feature, allowing for dry drilling without needing water. However, I found that starting the hole at a 45-degree angle, as recommended, took some practice to get right. Overall, these bits are a good addition to any DIYer’s toolkit.Review: I recently used the Comfylichi 9-Piece Dry Diamond Drill Bits Set for a home renovation project, and they performed well. The set includes various sizes, which was handy for different tasks. The built-in cooling wax is a nice feature, allowing for dry drilling without needing water. However, I found that starting the hole at a 45-degree angle, as recommended, took some practice to get right. Overall, these bits are a good addition to any DIYer’s toolkit.
Charleen Davis
Reviewed in the United States on December 13, 2024
They worked great when I was able to drill a hole through a thin slice of agate I am using as part of a clock face.
Judge Jacobs
Reviewed in the United States on November 13, 2024
Great for little holes in little flowerpots.
Rotorhead
Reviewed in the United States on November 10, 2024
Well this took all of 30 seconds to do. Have a number of pots that have no drain hole in them. Ordered these hoping they would do the job and they did. I put the pot in the sink upside down and drizzled cool water on them. I inserted the bit into my Ryobi battery powered drill, angled the bit 45° to start, was through the material in less than 30 seconds. That was quick. I'm more than satisfied with the quality of this product.
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