Abstract: The tool is provided with a pair of right and left cutting blades, a pair of right and left operating handles connected to said blades via pivots, and connecting pins that connects the blades to each other, and is configured so that: the operating handles are disposed so as to abut in the same plane and the opposing surfaces thereof form cam contact surfaces that directly contact each other; between the pivots and the pivot pins of the other operating handles, two connections fittings that connect the right and left handles on the front and back surfaces are disposed diagonally in a criss-cross shape, connecting the respective upper and lower ends to the pivots and the pivot pins; and the criss-cross position of the connection fittings is determined by the positioning of the pivot pins.