Kyocera WT861 Waste Toner Bottle is very important in kyocera printers. Most of the time there is a tiny bit of toner produced while printing which is diverted to the waste toner bottle for further use. It has a yield upto 500,000 pages and compatible with TASKalfa 6550ci TASKalfa 7550ci,TASKalfa 6500i and TASKalfa 8000i kyocera printers.