Tough, flexible steel back and Matrix II steel with 8% cobalt cutting edge give maximum durability. Angled shank for faster cutting. 1 2" universal shank. 2 blades per card. No. DW4802 2: 6", 6TPI, general purpose blade for fast cutting wood and fiberglass No. DW4804 2: 12", 6TPI, general purpose blade for fast cutting wood No. DW4806 2: 6", 10TPI, for cutting nail embedded wood, composition, cast aluminum, plastics, light gauge metals, fiberglass No. DW4808 2: 6", 14TPI, for cutting heavy gauge metal, hard rubber, and fiberglass No. DW4810 2: 4", 10TPI, for cutting mild steel, galvanized and aluminum pipe No. DW4811 2: 6", 18TPI, for cutting mild steel, galvanized and aluminum pipe No. DW4813 2: 6", 24TPI, for cutting metal trim, conduit and tubing No. DW4845 2: 6", 10 14TPI, for cutting nail embedded wood, composition, cast aluminum, plastics, fiberglass No. DW4847 2: 6", 5 8TPI, for fast cutting wood, general rough in