Porter Cable 12361-5 4-1/4" 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 wood, plastic, laminates, Plexiglas, and fiber paper Hook-shank style blade fits bayonet saw models 548, 648, 7349, 7549, and 7649 Five pack