NortonĀ® Metal 66252840001 Cut-Off Wheel, Type 1/41, Small Diameter Reinforced, Rightcut, Outside Diameter: 4-1/2 Inch, Thickness: 0.04 Inch, Arbor Hole / Thread Size: 7/8 Inch A.H., Abrasive Type: Aluminum Oxide, Bond Type: Resin, Max Speed: 13580 Rpm, Mounting: Arbor, Product / Materials Abraded: Metal/Stainless Steel