The Delta Sanding Sheets are made with a white wood top and Velcro-type backing The pack contains a total of 10 sheets 2 sheets of 60 coarse grit are ideal for pre-sanding, of rough, uneven beams and boards 2 sheets each of 80 medium grit and 120 medium grit are ideal for surface sanding and sanding down of surface blemishes 2 sheets each of 180 fine grit and 240 fine grit are ideal for finishing and fine sanding of wood