LENOX Tools General Purpose Reciprocating Saw Blade with Power Blast Technology, Bi-Metal, 12-inch, 10/14 TPI, 50/PK Bi-metal construction for durability and long life Power Blast Technology strengthens the blade to reduce breaks Versatile blade cuts easily through medium metals, wood, plastics, and composites T2 Technology allows efficient cutting in the widest range of materials T2 technology tooth design delivers up to twice the 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 10/14 tooth per inch blades are best for use with thick metals, metal demolition, fire and rescue