This thing broke off at the bottom of a ridge in seconds first. Completely useless and waste of money. Second, I don't know where they get the 1/2" cutter size. The burr is the same diameter as the shank, 6mm or 1/4 inch. The burr is about 1 inch long, I didn't measure it. 1/ 2 inch is never included in the picture Save money buy another brand.
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