The HS 155/2 bi jigsaw blade is a long-life, bimetal blade for cuts in thin non-ferrous metals, aluminum, iron, sheet steel, extrusions, and other similar materials. The precision milled teeth of this corrugated blade are extremely tough and long-lasting, even in difficult to cut materials. This is the ideal blade for fine cuts in thin and tough materials, where a high number of TPI is required.