The LENOX® Power Arc® Curved Metal Cutting Jig Saw Blades provides users with up to 2x the life* of a straight blade in thick metal and improved blade durability. The curved profile optimizes the angle of attack for fast cutting and longer life cutting metal. Patented T2™ technology provides fast, efficient cutting in a range of metal cutting applications. Power Blast technology® strengthens the blade to reduce breaks and increase durability. Bi-metal technology flexes to resist breaking and extend blade life.