Compatible Brand 3018C001AA (Cartridge 055H) High Yield Magenta Toner Cartridge fully compatible with the Canon imageCLASS 743CDW, imageCLASS LBP664CDW, imageCLASS MF741CDW, imageCLASS MF745CDW, imageCLASS MF746CDW. The use of compatible supplies does not void your printer warranty.