Lenox 121016W6R 6 TPI Wood and Plastic Cutting Reciprocating Saw Blade, 6" Extra-sharp fleam ground blade is ideal for cutting clean wood and plastic pipe quickly and pruning trees Bi-metal construction allows blades to bend and flex without breaking 6 tooth per inch blades are best for use with thickest metals, general demolition, wood, plaster, drywall, plastic and composites