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
CMT 299.102.00 2 pcs of Saw Blades Stabilizers, 5-Inch Diameter with 5/8-Inch Bore - Table Saw Blades - Amazon.com