To use in the following printer HP Officejet Pro 6960-6970 Extra high capacity HP 907XL 37ml black ink is an excellent choice for an affordable and dependable black ink cartridge. This product provides around 1,500 pages at 5% coverage, so if you are looking for a solution that will keep your printer printing for longer when you need it, this is going to be one of the smartest purchases you will make.