The Contents of this Package: 2 Pack 201X | CF400X Black toner Cartridge Color: Black Compatible Printer: Color Pro M252n(B4A21A) Color Pro M252dw(B4A22A) Color Pro MFP M277n(B3Q10A) Color Pro MFP M274n(M6D61A) Color Pro MFP M277c6(B3Q17A) Color Pro MFP M277dw(B3Q11A) Stable Print Quality: -High-quality Toner Cartridges high-quality printing. -Good quality and low price sufficient toner capacity smooth printing. -The first-class toner provides clear text and graphics which will not fade ink or fly powder for many years. Our Advantages: -Achieves clean printing without stains or smears perfect fit and brilliant colors. -Get the same excellent print results without spending more. -Healthy work harmless and environmentally friendly raw materials. -Carries premium cartridge replacements perfect for your home and business printing needs. Multi-layer Packaging: Multi-protection packaging to prevent damage caused by bumps during transportation. Quality Service that Makes Customers Comfortable: We have established a professional trustworthy and friendly team. If you ever have any questions or experience any issues with your item our team will be happy to assist you quickly.