Optimal for cutting wood and nail-embedded wood Nail guard technology cuts 2X faster than standard blades Quickest plunge cuts of any wood blade on the market. About This Product Milwaukee designs and manufactures Sawzall blades for the toughest professional applications. Material, blade geometry, and heat treating are designed to maximize cutting performance in nail embedded wood. Blade includes Matrix II bi-metal teeth for greater durability. Furthermore, precision forming process creates sharper teeth for fast cutting and double relief angle reduces tooth stress for long life. Includes 50 individual blades. Nail guard solves this tra de-off between speed and durability with an aggressive 5 TPI pattern for faster cuts and a unique design that protects against tooth fracture Ordinary tips bounce or skate on the work piece fang tip bites into the wood on first contact Matrix II bi-metal teeth for greater durability A thicker, more rigid blade body resists fracturing and bending for maximum durability