3 sided precision ground teeth offer razor sharp cutting edges at every stage of the stroke 7 Teeth/inch Jet Cut SP Bi-material handle screwed and ultrasonically welded for comfort and security Blade steel Swedish quality, thickness: 0.85mm Handle allows cutting at 45? and 90? Ideal for fast flow cut on wood and derived (laminated boards, panels, PVC?) Induction hardened teeth stay sharper twice as long Teeth are precision set to generate clearance of kerf for the blade to cut on both the forward and back stroke increasing cutting efficiency by 30%