Jig Saw Blade, Material Bi-Metal, Primary Saw Application Metal, Shank Type T, Teeth per Inch 36, Length 3-1/4 In., Application 8 to 26 ga. Stainless Steel, Longer Life Than Standard Bimetal, Package Quantity 5 BOSCH Stainless Steel Jig Saw Blades Deliver 2X Longer Life Specialty jobs call for specialty tools and accessories and BOSCH, the world's leading manufacturer of jigsaw blades, has introduced its stainless steel blades. Until now, most users have used a standard bi-metal blade in stainless steel that quickly dulls and produces a less than desired cut. BOSCH's new blades are bi-metal with an eight percent cobalt steel additive which increases heat and wear resistance. This gives users a blade that lasts twice as long as a bi-metal blade and costs much less than blades with a carbide stip. The Stainless Steel Blades are suited for cutting thin and medium gauge steels. They are available in 18-tpi for 8-16-Gauge steel and 36-tpi for thinner steel, from 16 to 26-Gauge. For optimal performance and durability, it is recommended to add oil to the cutting surface to reduce heat build-up and the tool should not operate faster than 1,500 strokes per minute in a non-orbital stroke mode.