For use in Kyocera TASKalfa 356ci, 358ci and Copystar CS 356ci, 358ci printers Compatible Replacement Toner Cartridges for Kyocera TK-5207CMYK, Copystar TK-5209CMYK PREMIUM Toner kit contains: 4 cartridges. Yield 18,000 pages/ black cartridge and 12,000 pages/color cartridge; based on the industry standard ISO/IEC 19798 at 5% coverage The Smarter Choice, Made to Match performance. Lower your Carbon Footprint- buy Made in USA Toner