Irwin IRW10504235 U144DP Jigsaw Blades Wood Cutting Pack of 5 Irwin Jigsaw Wood Cutting Blades made from carbon steel for use in softer materials such as wood, laminated chipboard, and plastics. With a universal shank and 3 Sided, fleam ground teeth for fast cut and clean finishes in all wood applications. Fast, clean cuts in hard and soft wood, particle board 6-60 mm (1/4-2 3/8in). Length: 100mm. Pitch 6 Fast Cut. Supplied in a pack of 5.