DMI Diamond Core Bit Sharpening BlockOur Professional Grade Core Drill Bits are made in the USA with high quality materials built to last. Diamond core drill bits are made to withstand intense drilling against concrete. However, after extensive use, they sometimes can dull out. Thats why we made a sharpening block for your drill bits. Instead of having to just buy a new one, you can sharpen the ones you already have. After sharpening your diamond drill bits with this block, youll be able
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