Steel demon saw blades are specially designed for the extreme demands of ferrous metal cutting thereby enabling precise cuts without sparks, heat or burred edges that result from using abrasive blades. Blades feature Freud's TiCo hi-density carbide, laser cut bodies, anti-vibration technology, perma-shield non-stick coating, triple chip design and pretensioned blades. Diablo's blade is designed to fit 7-1/4 inch circular saws. 7-1/4 inch diameter by 70 teeth, 5/8 inch arbor, 56 plus RPM, 18 gauge or thinner steel max cut thickness, very thin steel.