Style-Line's Soft-Sanders are thier unique solution for sanding hard-to-sand areas such as curves and rounded edges. Soft-Sanders are made of varying densities of foam that is still soft enough to compress into hard-to-sand places. Soft-Sanders will conform to your sanding surface while maintaining the necessary curvature. Soft-Sanders feature soft, rounded edges that virtually eliminate gouging; tapered edges for better access to difficult areas; and are durable and colvent-resistant. Becuase Solft-Sanders are so lightweight and comfortable to use, you experience zero fatigue! This combo kit comes with one (1) 8" Quad-Radii sander and 9 x-3/4" x 8" sheets of sandpaper, one each of the following grits: 80 GT, 150 GT, 400 GT, 800 GT, 1000 GT, 1200 GT, 1500 GT, 2000 GT, and 2500 GT.