Speedy Inks Compatible Toner Cartridge Replacement for Dell 331-8429 | W8D60 Extra High-Yield (Black, 2-Pack) For use in Dell: 3760DN, 3760N, & 3765dnf. Page Yield 11,000 Color: Black 100% Quality Satisfaction Guarantee The use of aftermarket replacement cartridges and supplies does not void your printer's warranty