The present disclosure relates to cutting tools for mounting onto a rotary drum or disc of a forestry equipment for cutting ligneous material, the cutting tool comprising: a coupling side for mounting onto the rotary drum or disc; a cutting side opposite the coupling side, the cutting side comprising a concave surface forming a pocket and at least two cutting edges; and at least two lateral sides extending from the coupling end to the cutting end. Each of the cutting edges comprises a plurality of serrations defining valleys or depressions in the concave surface of the cutting side, the valleys extending at different angles relative to a corresponding one of the cutting edges.