The Kyocera TK-8115Y is a yellow toner cartridge designed for use in Kyocera ECOSYS M8124cidn and M8130cidn printers. It uses microfine toner powder and is rated for approximately 6,000 pages at 5% page coverage (ISO/IEC 19798 standard). The cartridge also includes features like Kyocera's ECOSYS technology for eco-friendliness and a recycling program.