Gator 3-Inch x 4-Inch Multi-Surface Sanding Sponges combine good performance with great value. These four sided sponges are ideal when sanding and finishing wood metal drywall fiberglass and painted surfaces. After use these sponges can be rinsed and reused for the next project. The flexible nature of the Gator 3-Inch x 4-Inch multi-surface sanding sponge make it perfect for sanding around railings and into tight spaces.