The Brother LC101BK Black Ink Cartridge Lot Of 4 is a genuine/original product by Brother designed for inkjet printing. These cartridges are compatible with Brother printers and have an expiration date ranging from 05/2027 to 06/2026. Made in the Philippines, this unit is specifically designed for the Brother LC51 model and ensures high-quality black prints. Perfect for those in need of reliable and long-lasting ink cartridges for their printing needs.