Copystar Part# TK-8309K, TK-8309C, TK-8309M, TK-8309Y Toner Cartridge Set (OEM) FOR USE IN MODELS: Copystar CS3050ci, Copystar CS3550ci Copystar TK-8309K, 1T02LK0CS0 Black Toner Cartridge. Estimated Yield 25,000 Pages @ 5%. Copystar TK-8309C, 1T02LKCCS0 Cyan Toner Cartridge. Estimated Yield 15,000 Pages @ 5%. Copystar TK-8309M, 1T02LKBCS0 Magenta Toner Cartridge. Estimated Yield 15,000 Pages @ 5%. Copystar TK-8309Y, 1T02LKACS0 Yellow Toner Cartridge. Estimated Yield 15,000 Pages @ 5%