The compatible BT5000M Magenta Ink Bottle is designed for use in various Brother printer models. Each bottle holds 50 ml of Magenta Ink. It is not an OEM ink bottle. The company owns the brand name and trademarks and this product does not claim to be an official representative of those brands. The BT5000M Magenta Ink Cartridge is a great solution for anyone who is looking for a reliable and affordable way to fill up their ink.