Expert Quality Japanese high carbon steel hardened tempered straightened and stress relieved to ensure blade straightness with steel back for accuracy. Fine ground blade surface coated in ultra-tough lacquer to prevent corrosion and ease friction during sawing. 11tpi/12ppi tooth design to allow fast cutting and sawdust removal in both forward and reverse action. Each tooth is hardened to prevent tooth snap. Shock absorbing ergonomic soft grip handle. Display packed.