Standard Abrasives Quick Change Silicon Carbide 2 Ply Disc, 592318, 80 X-weightGeneral Information Brand Standard Abrasives Attachment Type TR Country Of Origin United States Sold As Carton California Residents Proposition 65 Warning Dimensions and Specifications Backing Weight X Weight Grit 80 Number Of Plies 2 Overall Diameter (Imperial) 1. 5 in Overall Diameter (Metric) 38. 1 mm Center Hole Thread Size Non Pertinent Micron Grade Non Pertinent Width 4. 5 in 11. 43 cm Height 4. 25 in 10. 8 cm Length 4. 5 in 11. 43 cm Volume 86.