The HP970/971 Refill Kit comes with everything you need to refill, including OCP inks for the best quality prints. It is very easy and safe to use and will you save hundreds of dollars over buying OEM cartridges. Refilling HP970. Refilling HP971. How to refill HP970. How to refill HP971. HP970. HP971. HP 970. HP 971. HP971XL. HP970XL. HP 970 Starter. HP 971 Starter. Office Jet Pro X.