electric sharpener designed specifically for classrooms?Engineered and designed specifically for use. electronic sharpener is made to serve classrooms' desk needs. Every electric sharpener equiped with 2 replaceble cutters. SAFE AUTOMATIC STOP BLADE OPERATION - If the scrape box is opened during sharpening, the blade stops instantly to protect fingers, both big and small hole. You can be assured to have your using our pencils sharpener at school classrooms. DOUBLE HOLE DESIGN FOR 6mm~12mm PENCILS Good for regular and painting colored pencils, even it can be a crayon sharpener. Featuring two separate holes for different pencil diameters: 6-8 mm and 9-12mm, we use mostly two sizes pencils in our whole life,one is 6-8mm, the other is 9-12mm. So we designed this battery operated pencil sharpener fits all size pencils. SLIDING SWITCH - Protect ' figners from injury. The biggest highlights of automatic pencil sharpener is that it comes with one sliding switch can hide the bigger hole, you can turn it off when you do not want use. Avoiding your to pushtheir fingers in. EASY TO CLEAN AND CARRY - Removable blades and concise design are convenient for you to take blades apart from pencils sharpener and clean it up. To let your or yourself possess a new pencil sharpener all the time.