These 11mm square straight woodturning carbide insert cutters are offered in 10-Pcs pack. They feature 2mm thickness with four cutting edges, 11mm square straight edges. They are sharpened to a razor edge of 30° on four side. It can be rotated to a new razor edge as one side becomes dull. They are replacements on almost all popular carbide woodturning tools or for their own woodturning tool designs.