6 Piece, Reciprocating Steel/Demolition Blade Set, Variable Tooth Design, Wooding Cutting Blades Feature An Easy Plunge Tip For Faster & Easier Plunging, Wood Cutting Blades Suited For Cutting Wood, Wood Composites & Nail Embedded Wood, Metal Cutting Blades Suited For Cutting Steel & Metal Composites, Set Includes: One 6" 8/10 TPI Reciprocating Saw Blade For Metal, Two 6" 14/18 TPI Reciprocating Saw Blade For Metal, Two 6" 6/12 TPI Reciprocating Saw Blade For Wood & One 9" 6/12 TPI Reciprocating Saw Blade For Wood.