Combo Pack Contains Complete Set of 4 Laser Toners Compatible with Xerox 6020 ; 1 Black, and 1 Cyan, 1 Magenta, 1 Yellow. Page Yield: 2,000 Pages per Black toner & 1,000 Pages per Colour Toner. Manufactured with highest quality and standards by ISO, CE, & REACH manufacturer for best printing performance matching the standards of OEM. PRINTOXE® Brand 100% Compatible in Retail Package Shown in Image. Shelf Life Exceeds 24 Months.