Do it 9 x 11" 320-Grit Ultra Fine Premium Plus Sandpaper, 3-Pack is the preferred choice of professional painters, ing versatility across a wide range of applications. This ultra-fine sandpaper is for achieving a smooth finish on water-based paints, wood, metal, fiberglass, and painted surfaces. The premium resin coating provides resistance to heat and humidity, ensuring a longer lifespan. With a heavy-duty paper backing that is extra flexible, this sandpaper is easy to use for hand sanding without tearing or cracking. Each pack includes 3 ultra-fine grade sheets, measuring 9" x 11". Model Number: 7267004