Norske Tools NCSBP208 5-3/8 inch 50T Metal Cutting Saw Blade For Steel Roofing, Metal Siding, Steel Pipe, Steel Studs & More 2 Bushings ( 5/8 inch To 10mm & 5/8 inch To 1/2 inch) - Amazon.com
Unibor Chop Saw Blade for Aluminum - Metal Cutting Cermet Tipped Blade for Circular Saws for Aluminium
5-1/2" x 30-Tooth SteelSlicer™ Medium Metal Circular Saw Blade: Amazon.com: Tools & Home Improvement