Unitized Wheel, Abrasive Material Silicon Carbide, Density Rating Soft (2), Grade Fine, Series Bear-Tex Rapid Blend NEX, Face Width 1/4 in, Maximum Operating Speed 15,000 RPM, Overall Diameter 3 in, Connector Size Not Applicable, Connector Type Quick Change, Quick Change System TR, Abrasive Type Non-Woven, Color Gray, Resistance Properties Smear