42-tooth, >3/32in. thick, 8in. replacement blade for Item#s M0479 and M0480. Cermet-tipped for cutting ferrous metals such as corrugated metal roofing, panel steel framing, sheet metal, mild steel, stainless steel and aluminum.Blade Use Ferrous Metal Blade Diameter (in.) 8 TPI (Teeth per Inch) 42 Tip Type Cermet Blades (qty.) 1