Color:3set+3black(18 Pack) The product you ordered: Smooth printing and fish, amazing price, perfect after-sales service.(reply within 24 hours) Compatible: 273 Ink Cartridge (6 Black, 3 Photo Black, 3 Cyan, 3 Magenta, 3 Yellow) 1. Compatible with: Expression Premium XP-520 Printer. Expression Premium XP-600 Printer. Expression Premium XP-610 Printer. Expression Premium XP-620 Printer. Expression Premium XP-800 Printer. Expression Premium XP-810 Printer. Expression Premium XP-820 Printer. Instructions for use: 1.This is a compatible replacement product only, this is NON-OEM. 2.Please confirm your Printer Model before placing order. 3.Please install the cartridge into the correct printer slot. 4.If line or blurry happens, try realigning your printer heads, choose your printer clean option to clean the print head. We suggest you to clean the printer heads everytime you replace the ink cartridge. Contact customer service: 1.Please select "FreeSub" below the Price, then click" Ask a question" . 2.Please find your order and click "Contact Seller". 3.Send us email and we will reply you less than "24 hours".