Irwin jigsaw blades (5) t301cd 10504229HCS: Carbon steel for use in softer materials such as wood, laminated chipboard, and plastics.3 Sided, fleam ground teeth for fast cut and clean finishes and smooth cuts in all wood applications.T Shank for AEG, Bosch, DeWalt and Hitachi JigsawsFast, fine cuts in hard and soft wood, particleboard, laminated particleboard 4-60mm (3/16Inch -2 3/8-inch), plastics, 4-30mm (3/16″-1 1/4-inch)