To maintain excellent clipping while avoiding defective cutting, edge tip chipping and the peeling of the outer peripheral surface of an anvil.

A die 11, which is rotated around its axis, is made of hard material such as cemented carbide and ceramics. The edge tip of the edge die formed in the outer peripheral face 11A of the die 11 is set in flush with the outer peripheral face of the large diameter section 11a having a large diameter than the outer peripheral face 11A of the die 11 or protruded specified length. The projection quantity L of this edge tip is set in the range of 0-4 μm (more preferably 1 μm-3 μm). In addition, both of the surface roughness of the outer diameter face 18 of the edge tip and the outer peripheral face of the anvil are set to 0.4 μm or less.