Steel-cutting 7 1/4in. dia., 40 tooth circular saw blade for cutting angle iron, steel plate, channel iron, I-beams, pipe and other ferrous metal shapes and parts up to 1/4in. Max. RPM 5800. Arbor 5/8 in. Arbor Knockout: Yes, Blade Speed (RPM): 5,800, Blade Use: Steel cutting, Blades (qty.): 1, Teeth (qty.): 40, Arbor Size (in.): 5/8 (16 mm), Blade Diameter (in.): 7 1/4, Tip Type: Titanium carbide