This 10pc sanding sheet set for use on wood contains five different sandpaper grits designed for pre sanding surface sanding and fine finished of wood designed to fit quickly onto the bosch sanding plate key features range of 5 grits included 60 80 100 120 180for use on wood6 hole perforation with velcro type backing93mm diameter sheets applications for pre sanding eg of rough uneven beams and boards for surface sanding and sanding down of surface blemishes for finishing and fine sanding of wo