Bostitch Antimicrobial SuperPro Glow Extra Heavy Duty  Commercial Classroom Electric Pencil Sharpener with Replaceable Cutter Cartridge System, 6-Hole, Silver/Black (EPS14HC) 75% faster sharpening and 12x longer cutter life (cutters are also replaceable) Distraction-free environment: SharpStop shuts motor off when pencil tip is sharp while SharpGlow illuminates to inform you Fan cooled heavy duty motor with thermal overload protection for quiet, stall-free use Safety switch prevents operation when easy-clean large shavings receptacle is removed Colored pencil and TriWrite compatible