To easily cut off the projection of a projected residual or the like by providing a blade body provided with a projected blade line whose center part is expanded to an outer side in a plane view on the tip part of a pair of arms so as to face each other.

The base part 5a of a lever 5 is inclined to a tool body 5b, a recessed part is formed in the plane view at this inclined part, and a part behind a shaft part in a horizontal direction is louvered downwards and turned to a projection part 8. Then, the shaft part 7 is supported in the state of being fitted inside the notched part 13b of a shaft 13 and the entire lever 5 is vertically turned with the shaft part as a center. When the tool body 5b of the lever 5 is pressurized downwards, the arm 2 on an upper side is pressed downwards by the projection part 8, upper and lower blade bodies are abutted to each other, and when pressurization is stopped, the upper and lower blade bodies 10 are separated by the elasticity of the arm 2 by the lever. Thus, the projection or the like is cut off to the root without leaving an uncut part.