Brother TN243CMYK (Yield: 1000 Pages) Black/Cyan/Magenta/Yellow Toner Cartridge Pack of 4 HLL3210/DCPL3510/MFCL3710 BK/C/M/Y PACK At Brother, we rigorously test all our cartridges, including this pack of 4 TN243CMYK Toner Cartridges, to ensure the highest possible professional reliability for users. Although it is easy to find cheap, non-original cartridges, these cartridges are not perfectly compatible with your Brother printer. They can cause problems in print quality and performance, and these issues can sometimes be expensive to repair. With the original TN243CMYK Toner Cartridge, your printer continues to run smoothly - you get more value in the long run and you have peace of mind knowing that the configuration you are using is reliable.