Bi-Metal Reciprocating Saw Blades with Power Blast Technology from Lenox are designed with a high-speed blasting process to add strength and increase durability to the blade, allowing trade professionals to perform more cuts without stopping to change blades. The Power Blast process is commonly used in the aerospace and automotive industries to add a layer of compressive stress to the surface of the metal to prevent cracks. In addition, high-speed blasting along the cutting edge strengthens the blade to reduce breaks and increase durability and blade life. T2 Technology reduces cutting forces on each tooth and optimizes chip removal to allow efficient cutting in a wide range of materials. The blades come in four types, including LAZER, Demolition, Wood Cutting and Metal Cutting. 800/628-8810; www.lenoxtools.com.