Amazon.com: AZ SUPPLIES Compatible Toner Cartridge Replacement for Kyocera Mita TK-717 KM-3050 KM-4050 KM-5050 NEC IT5050 TASKalfa 420i TASKalfa 520i (Black - 1 Pack) : Office Products
Kyocera KM-5050 Black Toner Cartridge, Genuine (G7689)
Source Toner Powder Refilled For Kyocera KM 4050 2530 3035 4030 3530 4035 5035 3050 5050 Taskalfa 420i 520i on m.alibaba.com
Amazon.com: Kyocera 1T02GR0US0 Model TK-717 Black Toner Kit For use with Kyocera KM-3050, KM-4050, KM-5050, TASKalfa 420i and 520i A3 Monochrome Multifunctional Printers; Up to 34000 Pages Yield at 5% Coverage :