PFERD Performance Line SG Depressed Centre Cut-Off Wheel, Aluminum Oxide Abrasive, 24 Grit, Coarse Grit Grade, 7/8 in Arbor, 6600 rpm Speed, 9 in Diameter, 1/8 in Thickness, Applicable Materials: Cast Iron, Sections, Sheet Metal, Solid Material and Steel, Suitable for: Angle Grinders