Standard Abrasives Unitized Slab 631, 802631, A/O Fine, 15 in x 15 in x 1/4 inGeneral Information Brand Standard Abrasives Country Of Origin United States Sold As Case Lead Time 12 days California Residents Proposition 65 Warning Return Policy NCNR Non Cancellable Non Returnable Dimensions and Specifications Center Hole Diameter (Imperial) 0. 25 in Center Hole Diameter (Metric) 6. 35 mm Face Width (Imperial) 15 in Face Width (Metric) 381 mm Overall Diameter (Imperial) 15 in Overall Diameter (Metric) 381 mm Grit Non Pertinent