NortonĀ® GeminiĀ® 69078609032 Cut-Off Wheel, Type 1 Straight, Outside Diameter: 20 Inch, Thickness: 5/32 Inch, Arbor Hole / Thread Size: 1 Inch A.H., Abrasive Type: Aluminum Oxide, Bond Type: Resin, Max Speed: 2710 Rpm, Mounting: Arbor, Product / Materials Abraded: Metal/Stainless Steel