Makita X-LOCK 4-1/2 in. Diamond Blade Variety Pack for Masonry Cutting (3-Pieces) E-12647 - The Home Depot
AVID POWER Angle Grinder, 7.5-Amp 4-1/2 inch Electric Grinder Power Tools with Grinding and Cutting Wheels, Flap Disc and Auxiliary Handle for Cutting, Grinding, Polishing and Rust Removal - Red - Amazon.com