Kum 301.01.21 1-Hole Steel Blade Rectangular Pencil Sharpeners, Colors Vary FT 1-hole steel blade pencil sharpeners 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 in rectangular shape and three fluorescent transparent assorted colors