LENOX 20492-B606R 6" 6TPI Wood & Metal Cutting Reciprocating Saw Blade - 25 Pack For crimping round metal pipe to create a male fitting end Optimal handle span for maximum power and comfortable operating range Crimps heavier gauge pipe T2 technology tooth design delivers longer blade life and cuts heavy materials more easily. Bi-metal construction allows blades to bend and flex without breaking. Designed to minimize friction and heat build-up while cutting through the widest variety of metal materials. 6 tooth per inch blades are best for use with thickest metals, general demolition, wood, plaster, drywall, plastic and composites. Made in the USA from global components.