The WARRIOR® 12 -Piece 6 In. Reciprocating Saw Blade Set provides fast, aggressive cutting for your wood and metal cutting needs. The recip blades are made from tough, shatter-resistant bi-metal to keep a sharp edge longer on your reciprocating saw blade and to withstand tough cutting jobs. The heat-treated reciprocating saw blades can handle nail-embedded wood, sheet metal, thick metal and demo work.