Flexovit® Flexon® A7434H Grinding Wheel, Type 27 Depressed Center, Combination, General Purpose, Outside Diameter: 9 Inch, Thickness: 1/8 Inch, Arbor Hole / Thread Size: 5/8-11 Thread, Grit: 24, Abrasive Type: Zirconia Alumina, Max Speed: 6800 Rpm, Mounting: Spin-On, Product / Materials Abraded: Metal/Stainless Steel