4 Pack. Refurbished cartridges for hp 56 HP 57. Includes Sophia Global Brand Cartridges for 2ea HP 56 Black + 2ea HP 57 Tri Color. Sophia Global Cartridges are manufactured in an internationally certified ISO 9002 factory. Sophia Global Cartridges come with a 100% 180 day money back guarantee and technical support. Manufactured to produce excellent color matching for vibrant photos and crisp text and have a shelf life of 2 years. Page Yield: 450 Black 400 Color Accurately displays ink level.