Sharp MX-230CU Primary Charge Corona Wire Unit (PTC) Kit is used for the Sharp MX-2010U, MX-2310U, MX-3111U, MX-2610, MX-3110, MX-3610N, MX-2610N, MX-2615N, MX-2640N, MX-3110N, MX-3115N, MX-3116N, MX-3640N  copiers. Sharp brand supplies works best for your Sharp copiers or printers and make using Sharp ptc kit make them last longer.