This 10pc sanding sheet set for use on stone contains five different sandpaper grits designed for gloss sanding and edge rounding shaping and edge camfering designed to fit quickly onto the bosch sanding plate key features range of 5 grits included 120 240 400 600 1200for use on stone6 hole perforation with velcro type backing93mm diameter sheets applications for shaping and edge chamfering for fine sanding during shaping for gloss sanding and edge rounding