SIZE:PWA/WCA40 PWA/WCA35 PWA/WCA30 PWA/WCA25 PWA/WCA20 PWA/WCA15 PWA/WCA12 PWA/WCA09 PWA/WCA05 PWA/WCA03 PWA/WCA IS A White Calcined Aluminum Oxide Abrasive Powder Consisting Of Plate-shape Crystal Of Aluminum Oxide(al2o3) With High Purity More Than 99% And Concentrated PSD.