This set of ink cartridges is a high yield toner that is compatible with HP printers such as the HP Officejet Pro 6978, HP Officejet 6962, HP Officejet 6968, HP Officejet 6958, HP Officejet Pro 6975, and HP Officejet Pro 6954. The set includes black, cyan, magenta, and yellow cartridges, and is perfect for those who prefer a high-quality printing experience. The product is specifically designed for HP printers and provides excellent print quality.