"Norton 6 1/2in. Circular Saw Reinforced Cutoff Blade Type 1 is the most popular cutoff application for deburring, cleaning, slotting and cutting roof decking and all types of metal, including sheet metal, steel rods and angle iron. Recommended Use Metal, masonry, Max. RPM 9405, Wheel Thickness in. 1/8, Wheel Diameter in. 6 1/2, Arbor Size in. 5/8, Wheels qty. 1, Wheel Type Type 1 right angle."