The wood cutting saw blades are equipped with Fangt Tip and Nail Guard technology to extend life and increase durability in nail-embedded wood. Torch demolition metal cutting blades provide 5X blade life and facilitate tough cuts. They also feature Grid Iron technology for increased blade stiffness. This set includes a jobsite case for convenient blade storage, too. The metal cutting blades feature Tough Neck ribs that strengthen the blade tang and minimize breakage. The reciprocating saw blades in the set are ideal for a variety of professional applications, including general use and demolition. Blades cut through wood, metal, and multi-material Ideal for performing demolition work Features a durable and convenient case for blade storage Wood cutting blades have a 5 TPI design for fast aggressive cuts Wood-cutting blades with FANG TIP and NAIL GUARD technology to extend blade life and increase durability in nail-embedded wood Optimized tooth design providing longer life than standard bi-metal blades SAWZALL blades Tough Neck ribs strengthen the blade's tang and minimize breakage Grid Iron honeycomb pattern increases blade rigidity to resist blade buckling 1/2 in.