Features Zirconia alumina ensures high abrasion when working on steel and very good stock removal. Low level of vibration for comfortable working. Application: For coarse and fine grinding work as well as for removing rust and burrs from steel surfaces. We recommend:+ Grit size 24/36/40/60 for maximum stock removal.+ Grit size 80/120 for fine grinding. Diameter / 125x22 Grain / 60 Max. RPM / 12 300