Swingline Electric Pencil Sharpener, Optima, Fits Six Different Pencil Sizes, Black/Orange (29968) Pencil sharpener has an adjustable dial that accommodates six different pencil sizes including triangular student pencils Quiet performance will not disturb others; large, translucent shavings receptacle is spill resistant for neater disposal Lead saver feature prevents over-sharpening, thermal cutoff prevents overheating