H.K. Porter® Industrial grade center cut cutter for general plant maintenance. Drop-forged, precision ground, alloy tool steel jaws with center-cut blades. Cuts soft, medium or hard materials. Maximum hardness of material to be cut: Brinell 455/Rockwell C48. Lockplate keeps jaws from loosening. Toggle joints turn 50 lbs hand pressure to 4000 lbs cutting pressure. Screw-type adjustment realigns edges.