wheel performance, especially in type 27 depressed center grinding wheels series.2. Product SpecificationType of productGrinding wheelCertificationSGS En12413 MPAWheel Diameter100mmSize4inchThickness6mmBore Diameter16mmAbrasivesWABackingFiber glassBondReinforced ResinItem weight22Kg/cartonQuantity200pcs/cartonMax speed70m/sSub TypeFor metl3. Product FeatherSharp & EfficientExtra durabilityHigh break-resistanceSuper cool grinding experienceEconomic4. Product Details5. Product Qualification6. Deli