Artist's Sharpener Set contains two zinc alloy sharpeners with finely honed SK5 steel blades. Side grip for comfortable and easy handling. Features: Zinc alloy body, twin barrel and single barrel, finely honed SK5 steel blades. Suitable for use with: Mont Marte Graphite, Colour, Watercolour and Jumbo Metallic Pencils. The twin barrel sharpener sharpens 8mm pencils to a regular point for sketching or writing and the large barrel is for jumbo 10mm sized artist's pencils.