Dewalt Portable Band Saw Blade, 32-7/8-Inch, .020-Inch, 14/18 Tpi,, Dw3986C Product Description Crafted with 8% cobalt for extreme durability, DEWALT Bi-Metal Cordless Bandsaw Blades are ideal for thick metal, medium metal, and thin-gauge metal cutting. A Matrix II High-Speed Steel Edge delivers excellent heat and wear resistance, and Rc 65-67 tooth hardness offers helps to increased durability. An alloy steel backer provides fatigue resistance. From the Manufacturer DEWALT Bi-Metal portable bandsaw blades incorporate the Matrix II High Speed Steel Edge for heat and wear resistance. These blades have an 8% cobalt content for added durability and wear. Rc 65-67 tooth hardness also increases wear resistance. The have an alloy steel backer for fatigue resistance. Applications include thick metal, medium metal and thin gauge metal cutting. Package of 3 32-7/8-Inch blades. Matrix II high speed steel edge of the band saw blade is designed for heat and wear resistance 8% Cobalt Content For Added Durability Wear Rc 65-67 Tooth Hardness For Increased Wear Resistance Alloy Steel Backer for Fatigue Resistance