pencils, lead-holders, pencil leads, pencil extension pieces, tip protection pieces for pencils, pencil lead sharpeners, pencil sharpeners, machines for sharpening leads and pencils, [ chalks, crayons, chalk-holders, chalk extension pieces, ] pens and fountain pens of all kind, penholders, fountain penholders, ballpoint pens, felt-tip pens, fibre-tip pens, pen cartridges, inks for writing pens,[ rubber erasers; artists pastels, painting sets for artists, paint brushes, modeling pastes, glues ...