If you want to sand down wood or wooden materials, use red:Wood sanding sheets. This is available in grits of 40 to 180. Rule of thumb: use a grit that is twice as fine for every subsequent sanding run, example: 40 80 120. white:Paint sanding sheets are available for paint, varnish, filler or roughcast. The sanding sheets are each available in a combi pack for the front, triangular part and the rear, trapezoidal part. You can also use BOSCH Delta Sander sheets for the triangular front part because the tools are directly matched to each other.