To provide a new type cutter, relaxing an impact in contact, especially having an excellent performance as a hand-held type cutter by preventing a rotary blade from biting into a material to be cut while having the same cutting performance as the conventional cutter.

This two-flute cutter includes: two rotary mechanisms fitted to both end parts of a body; two rotary blades fitted to the tips of the rotary mechanisms, respectively, and a holding mechanism holding the positions of the two rotary blades, wherein the two rotary blades are rotated in the reverse directions with a very small clearance gap therebetween.