For HP 678/680/682/702/703/704/802/803/901/21/22/27/46/60/61/62/63/65/67 Cartridge use **** Please confirm the Cartridge in good condition before you refill **** **** Ink Suction Tools = For ink cartridge blockage use **** Please Read Before Place Order **** 1. This HPP refill kit is only a tools which customer can do the ink refill by their own ink cartridge. Ability to operate this tool is depends and the outcome will be different. We are not responsible for the faulty, incorrect, missing, damaged, incompatible, or empty of the ink cartridge. We are selling auxiliary tools and filling concepts..so, the outcome of the ink is not under our responsibility. We do not accept returns request, please be mindful. 2. Ignore the "low ink "messages on the computer or printer, because there are chips inside the original cartridges to record how many pages were printed and they cannot be reset. As a result the printer reads the chips and tells you that the cartridges are empty, even though they are not. This is why you are getting the "ink low" message even though the ink tank is at full capacity. 3. If your ink cartridge signal on the printer is blinking, it means your cartridge reached the printing limit or ink cartridge chips problem and cannot refill anymore..