With 70% faster sharpening, this classroom electric pencil sharpener will sharpen a pencil from new to pointed in under 4 seconds. Extra hardened helical cutter developed by Bostitch Engineers that allows for up to 10x longer cutter life without dulling. Features a quiet mechanism developed to keep you running an efficient and focused classroom, even when there is a long line at the sharpener. Super duty motor with thermal overload protection keeps the plug-in sharpener from overheating. Sharpen a high volume of pencils back-to-back without a break. Tamper-proof safety switch shuts down the motor when large shavings bin is removed, the Bostitch standard for safety in a classroom environment. Tip Saver Technology prevents over sharpening and extends pencil life. The cutters pull back once the pencil is completely sharp, even if the student doesn’t retract the pencil. One-hand, six-size selector sharpens a variety of pencil types including jumbo and Ticonderoga Tri-Write.