Scotch-Brite SE Surface Conditioning Disc, SE-DH, A/O Coarse, 4 in x NHGeneral Information Brand Scotch Brite Attachment Type Hook & Loop Abrasive Attachment Type Non Pertinent Disc Type Non Pertinent Country Of Origin United States Sold As Case California Residents Proposition 65 Warning Dimensions and Specifications Maximum Speed 13000 rpm Overall Diameter (Imperial) 4 in Overall Diameter (Metric) 101. 6 mm Backing Weight Non Pertinent Center Hole Thread Size Non Pertinent Grit Non Pertinent Micron Grade Non Pertinent