All jigsaw blades are made from steel, to which Tungsten Carbide grit has been brazed. Unlike conventional blades, these cut in both directions. This produces a better cut and reduces chipping. Eye protection should be worn at all times JSB1.Bosch (length 7.6cms)...$9 JSB4.Black&Decker(7cms)...$9 Reciprocating and Jigsaw Blades are Tungsten Carbide grit edged, they cut on both up and down strokes. This dual cutting action also means an exceptionally smooth finish, often eliminating or greatly reducing finishing operations. The Reciprocating blades are best for the hardest and most abrasive materials: Cast Iron, Fibre Reinforced Plastics, and Cement, Graphite Composites, Carbon, Masonry materials, Plastic Laminates and Composition board. RCP4.(overall length 10cms)...$9 RCP8...(overall length 20.5cms)...$15   Prices are recommended retail, and subject to change, without notice. Call or email us for specials.