5 Compatible Toner Cartridges for Dell 1250 ; Black + Complete Set; 2 Black 331-0778 , 1 Cyan 331-0777 , 1 Magenta 331-0780 , and 1 Yellow 331-0779 for Dell 1250C / 1350cnw / 1355cn / 1355cnw / C1760nw / C1760nfw / C1765nf Page Yield: Around 2,000 Pages per Black Cartridge and 2,000 Pages per Colour Cartridge @ 5% Standard Coverage Rate on A4 Paper Size. 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.