Perma-Grit® Reciprocating and Jigsaw Blades are tungsten carbide grit edged and they cut on both up and down strokes, thus eliminating chipping. This dual cutting action also gives a very smooth finish. 

These Perma-Grit® blades are great on the hardest and most abrasive materials such as cast iron, fibre reinforced plastics, cement, graphite composites, carbon, masonry materials, plastic laminates and composition board.