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Bought for one job - through drilling & counterboring a 20mm thick granite worktop saver. The bits coped very well, even when used dry - better still when water-lubricated from an eye dropper. Left a very clean hole with minimal break-out. I suspect there are signs of wear on the cutting faces, hence 4-stars.
Verified purchase: Yes | Condition: New
Bought this set of so called Diamond hole saws. They was a complete waste of money, and my time. A full set drilled part way through a Porcelain tile, a least there was a part pilot hole to drill with a proper Porcelain drill bit that I purchased the next day.
Verified purchase: Yes | Condition: New
bought some other ones of ebay I was using one drill to a hole BUT THESE ARE BRILL. Drilled 8 holes with the same bit and it's still going strong. CHEERS
Verified purchase: Yes | Condition: New
great set of cutters,found a good tip for cooling the glass,just fill a plastic bottle with water, and put a pin hole in the side of the bottle, then the water will flow well, then to stop the flow just tighten the cap on the bottle, simple. cheers for a great service. tony gray
Verified purchase: Yes | Condition: New
I used them to drill glass, no problem whatsoever .Really easy, perfect results.
Verified purchase: Yes | Condition: New
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