8" 14 TPI Straight Back Bi-Metal Reciprocating Blade (100 pack) Applications: Cutting light to heavy guage metal Cutting threaded rod, unistrut, angle iron, pipe, conduit and more Features: Patented tooth design utilizes sharper tooth geometry for faster cut rates Aggressive shank angle increases tooth contact, maintaining cutting speed as blade wears for longer blade life. Specially formulated anti-stick coating minimizes friction and gumming