Grinding wheel for stone Material:Aluminium Oxide size:115mm*6.0*22.2 Speed:13300r.p.m. 80m/s Certificate:EN, PMA Grinding wheel for stoneMaterial:Aluminium OxideCertificate:EN, MPA Application Chart for Grinding Wheels(Recommendations)Abrasive GrainsBond HardnessApplications MaterialAR,QNormal Steel/Mild SteelP,QStainless Steel(INOX)CSStone/MasonryACQ,R,S,TCast Iron and None-Ferro Metal(Aluminum ...