NortonĀ® GeminiĀ® 66252842025 Cut-Off Wheel, Type 27/42 Depressed Center, Rightcut, Outside Diameter: 4-1/2 Inch, Thickness: 3/64 Inch, Arbor Hole / Thread Size: 5/8-11 Thread, Grit: 24 (Coarse), Abrasive Type: Aluminum Oxide, Max Speed: 13580 Rpm, Mounting: Threaded, Product / Materials Abraded: Metal/Stainless Steel