2 Pack Porter Cable 12379-5 3-1/2" x 10 TPI Wood and Composition Hook Shank Blades 5 Blades per Package One year warranty/30-day performance certification 10 teeth per inch for smooth cutting Cuts solid wood, plywood, plastics, and hardboard Hook-shank style blade fits bayonet saw models 548, 648, 7349, 7549, and 7649 Five pack