Features XHC˛ cutters for 75% faster sharpening and 12x longer life. Stall-free QuietSharp fan-cooled motor has thermal-overload protection for increased motor life. MagnaSafe tamper-proof safety switch shuts motor off when the large, easy-to-clean shavings receptacle is removed. Versatile, easy-turn pencil selector dial features six different hole sizes to choose from. Tip Saver Technology prevents over sharpening and extends pencil life. Oversized, tough, die-cast metal base with suction cup feet delivers extra stability.