GENERAL PENCIL-Eraser Set. These are the ideal tools for fine art, crafts, graphic Design, architecture, and memory books. Kneaded Eraser: used to remove charcoal and blend and soften details in drawings, use the tacky surface for large erasing or knead into a custom shape for specific details, to renew eraser simply knead it until surface appears clean. Gum Eraser: a classic soft eraser for gentle erasure of charcoal, graphite and smudges. Extra Soft White Vinyl Eraser: ideal for graphite, pastels, and charcoal from a variety of papers and surfaces, erases without abrading the surface of fine papers.