This blade can be used with Item# 151855 to cut through thin metal up to 1/16in. Ideal for use on residential steel siding.Blade Use Thin Metal Blade Diameter (in.) 5 3/8 Arbor Size (in.) 13/16 (20mm) TPI (Teeth per Inch) 50 Blade Speed Per Minute (ft.) 4,300 Blades (qty.) 1