Kum 345.02.21 12-Pack Zombies Pencil Sharpener with Polystyrene Container, Colors Vary Zombies pencil sharpener is made of polystyrene Block profile with recessed grip area The blades are made of high-carbon steel, therefore long-lasting and very sharp Dynamic torsion action built into each blade makes for a smoother, cleaner cut Comes with polystyrene container and zombies design