Description .020 IN 18 TPI Portable Band Saw Blade – 3 PACK The DEWALT 18 TPI portable band saw blade (3 pack) is built to last, with a number of exclusive technologies designed to give you confidence that the blade will resist wear throughout its lifespan. An 8% cobalt alloy steel content and RC 65-67 tooth hardness maximize durability. With an alloy steel backer and matrix II high speed steel edge, users never need to worry about heat and fatigue. DEWALT understands that you can’t afford to invest in an inferior product. All DEWALT products are extensively tested to ensure that they won’t let you down on your real world jobsites. Features: Matrix II high speed steel edge for heat and wear resistance 8% cobalt alloy steel content for added durability and wear RC 65-67 tooth hardness for increased wear resistance Alloy steel backer for fatigue resistance 8 percent cobalt alloy steel content for added durability wear