HP 934 Ink Refill Kit for HP C2P19AN Black Ink Cartridges used in HP Officejet Pro 6830, HP Officejet Pro 6230, HP Officejet Pro 6835, HP Officejet 6812, HP Officejet 6815 Inkjet Printers with 3-50ml Black U FiLL INK Bottle 150ml Black U FiLL INK with 1 Filling Syringe Refill for: HP 934 C2P19AN Black Inkjet Cartridge Premium dye ink for superior print quality. Backed by a 100% Guarantee and a Two- Year Warranty All manufacturer brand names and logos are registered trademarks of their respective owners. We reference these Mfg names for compatibility purposes only.