Irwin Jigsaw Wood Cutting blades made from Carbon steel for use in softer materials such as wood, laminated chipboard, and plastics. They have 3 Sided, fleam ground teeth for fast cut and clean finishes in all wood applications. T Shank for AEG, Bosch, DEWALT and Hitachi Jigsaws.Fast, straight cuts in aluminum 4-15mm, plastic 4-30mm, non-ferrous metal, metal 4-6mm, fiberglass, lead, tin 4-20mm. Length: 100mm. Pitch: 6. Supplied in a pack of 5.