OKDIAMOND Diamond Cutting Wheel 4-1/2 x 7/8 Inch for Metal, Cut Off Wheel with 3000+ Cuts on Rebar, Steel, Iron and INOX, for Angle Grinder,4.5 inch: Amazon.com: Tools & Home Improvement
RIDGID 4.5 in. Diamond Cutting Diamond Blade HD-MTL45 - The Home Depot
Best for Concrete Diamond Cutting Disc - Bosch Professional