GRINDING AGENTS [ AND POLISHING AGENTS IN SOLID, PASTY AND LIQUID FORM, GRINDING MEMBERS, ESPECIALLY IN THE FORM PLATES, DISCS, DISHES, RODS AND PINS, GRINDING AGENTS ] ON [ RIGID AND ] FLEXIBLE BACKINGS, EMERY TISSUE, EMERY PAPER, [ EMERY FOIL ] AND COMBINATIONS IN THE FORM OF [ SHEETS, STRIPS, LEAVES, ] ROLLS, DISCS, [ FOILS, SLEEVES ] AND RIBBONS; ALL PRODUCTS ALSO TO BE USE FOR MACHINES AND WITH MANUALLY OPERATED TOOLS