Goldflex Sanding Sponges P180 to P500 Grit (200 Sheets Per Box). (Priced Per 5 Boxes/1000 Sheets). (2 Weeks Lead Time). (Choose a Grade from the drop down list). Goldflex is suitable for sanding profiled surfaces. Goldflex is a light, flexible latex paper suited for both dry and wet sanding. The special stearate coating prevents clogging and pill forming.