[Carbide Technology] Up to 50x longer life than bi-metal reciprocating saw blades [Wood and Metal Demolition] 6 teeth per inch teeth design is ideal for cutting through all tough wood and metal materials, outstanding lifetime even when cutting high-alloy steels. [Ultimate cutting performance] Easy to cut advanced materials where bi-metal blades fail quickly, such as stainless steels, high-alloy bolts or hardened screws. [Design for Toughest Materials] Each carbide tooth is precision ground and individually welded, provides ultimate flexibility and impact strength needed for heavy duty demolition work [Blade Dimension] 6-inch 6 TPI nail-embedded wood demolition, 1/2-inch universal shank fits all major sawzall saws such as Bosch, Milwaukee, Black&Decker, Hitachi, Makita, Metabo, Dewalt, Porter Cable, Skil, Rockwell etc.