GITACHI 15060 6" Bench Grinding Wheel 60 Grit- 6 Inch X 3/4 Inch X 1/2 Inch grinding wheel 6 inch dia and 1/2 inch arbor Bonded Aluminum Oxide Abrasive, Medium Grit, Replacement Wheel for 6-Inch Bench Grinders, Maximum 4200 RPM, 6-Inch Diameter, 3/4-Inch Thick, our web site :www.gitachi.com