The HP 20 Genuine/Original Black Inkjet Ink Cartridge contains 28 ml (0.95 fl oz) of high-quality ink designed specifically for HP printers. This genuine product from HP ensures reliable and consistent printing performance, with a manufacturer warranty of 6 months for added peace of mind. Compatible with various HP Deskjet models, this ink cartridge in black color is ideal for producing professional-quality documents and images with ease. Trust in the HP brand to deliver exceptional results every time.