Konica Minolta QMS Magicolor 2300 4 Color Refill. Refills 1710517-005 for Black; 1710517-004 and 1710517-008 for Cyan; 1710517-003 and 1710517-007 for Magenta; 1710517-002 and 1710517-006 for Yellow Toner is designed specifically to work in the Konica Minolta QMS 1710517-005 (Black); 1710517-004 and 1710517-008 (Cyan); 1710517-003 and 1710517-007 (Magenta) and 1710517-002 and 1710517-006 (Yellow) toner cartridges. We test many toner samples from toner manufacturers. Most are rejected as they do not meet the look and specifications of the OEM toner. The toner we sell DOES match OEM toner! You will save up to 80% on the cost of your toner cartridges. Refilling your own toner cartridges is more environmentally friendly than buying new, compatible, or even remanufactured toner cartridges. There is almost zero waste. We provide easy-to-follow instructions with photographs of the process. The process is so easy that most people do not need help. But if you do need friendly tech support, we are only a telephone call away. We guarantee that you will be happy with our productor we refund your money.