MK Morse CSM72540NSC  Metal Devil NXT Circular Saw Blade, 7-1/4-Inch Diameter, 40 Teeth, 5/8-Inch Knock-out Arbor, for Steel Cutting N/A Imported Cuts through steel, iron and aluminum without premature chipping of teeth Minimal heat transferred to the inner plate, fresh cuts are cool to the touch Eliminates virtually all hot sparks, abrasive dust, grit, scorched surfaces and burns that require additional finishing Packaging 1 per blister pack