6-1/2 in. x 48 Tooth Steel Demon Metal Cutting Saw Blade
Norske Tools NCSBP210 6-1/2 inch 48T Metal Cutting Saw Blade For Steel Roofing, Metal Siding, Steel Pipe, Steel Studs & More 5/8 inch Bore with Diamond Knockout - Amazon.com
Mk Morse CSM6505658CLAC Metal Devil Circular Saw Blade, Aluminum Application, 6-1/2-Inch Diameter, 56 TPI, 5/8-Inch Arbor, multi - Hartmann Variety