The Set of Genuine Copystar TK-8509Y/C Toner Cartridge includes cyan and yellow toner cartridges designed specifically for Copystar printers. These original cartridges are compatible with models such as Copystar CS4551ci, CS4550ci, CS5550ci, and CS5551ci. Made in China, these cartridges ensure high-quality prints and reliable performance. Ideal for both professional and personal use, this set of toner cartridges is a genuine product from the Copystar brand, ensuring compatibility and optimal results.