Ks Manual Classroom Pencil Sharpener, Table/wall-Mount Design, Manually-Powered, 2.75 X 4.75 X 4.25, Black/nickel Commercial-grade pencil sharpener for high-volume environments. Dual helical cutters sharpen pencils with precision. Mountable on wall, desk, or table with the included screws. Adjustable to accommodate 8 pencil sizes. Manual operation is easy for school children to use.