Product Info Catalog Abrasives Bonded Points/Stones 4.5-Inch Masonry Grinding Wheel 4.5-Inch Masonry Grinding Wheel Request a Quote UPC: 52088041185 SKU: 641664 Model Number: 641664 Master Mechanic, 4-1/2" x 1/4" x 5/8"-11 Masonary Grinding Wheel, With Metal Hub, Fits 4-1/2" Angle Grinders.