YATUNINK 2x 940 PrintHead Black/Yellow C4900A And Magenta/Cyan C4901A 940 Fit 8000 8500 Series As good quality as original. officejet pro 8000, 8500, 8500A, 8500A plus, 8500A premium 1 Packs Refurbished 940 print head C4901A, Magenta/Cyan and 1 Packs Refurbished 940 print head C4900A, Black/Yellow. We Promise: All products covered by a 100% satisfaction guarantee and 90 days warranty. Return&Refund&Replacements: We have a very lenient return policy with a full refund (including shipping costs) offered within 90 days from date of purchase if the items cannot work properly. And any defective/damaged item can be replaced up to 180 days from the purchasing date.