Scotch-Brite Clean and Strip Disc D1, 4 in x 1/2 in x 1/4 in S XCSGeneral 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 Center Hole Diameter (Imperial) 0. 25 in Maximum Speed 6000 rpm Overall Diameter (Imperial) 4 in Overall Diameter (Metric) 101. 6 mm Center Hole Thread Size Non Pertinent Grit Non Pertinent Micron Grade Non