"I drilled 8 x 12mm holes in ceramic tiles. tool still sharp at the end of the job. Only issue is it getting bunged up. There is some kind of plastic insert in the middle which didn't work very well at ejecting tile slugs. Once we learned that, the tool was excellent."
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Review 2 for Erbauer Diamond Tile Drill Bit 12 x 8mm
"I love this drill bit, I got it to drill through glass and it did with no problem . I'm a lady who does crafts and one of my projects was to drill through glass I was a bit worried as I have never don it befor but wow it done the job. If you need to drill through glass this is the one to go for"