16G039 Corner-Rounding End Mills

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Double-end corner-rounding end mills with a straight shank have concave cutting edges on both their ends for creating rounded outside edges on a workpiece. They can accomplish more milling tasks than single-end corner-rounding end mills before they need to be replaced. When the cutting edges on one end wear down, the end mill can be flipped over to expose the fresh cutting edges on the other end. End mills with a straight shank install into a chuck, collet, or heat-shrink toolholder on a milling machine.