Depending on the application, you will need different sanding sheets. There is a large selection but the names are easy to remember and make it easy for you to select the right sanding sheet: if you are working on wood or wooden materials, it is best to use perforated red:Wood sanding sheets. The holes are required for the tool-internal dust extraction. If you are working on paint, varnish, filler or roughcast, then use perforated white:Paint sanding sheets with a service life that is up to four times longer than conventional coated abrasives. If you have non-perforated sanding sheets, we recommend using a hole punch.