Professional-grade compatible ink cartridge system designed for HP ink tank printers. This aftermarket refill kit contains four 500ml bottles of premium pigmented ink (Cyan, Magenta, Yellow, Black) offering exceptional page yield of 15000 pages per set. Perfect for high-volume printing environments, this cartridge replacement solution includes 4 refill syringes and 2 pairs of protective gloves for safe, mess-free refilling. Compatible with HP DeskJet GT5810, GT5820, 3070, 3524, 5525, HP Photosmart all models, HP Officejet 4610, 4620, 6500, 7500A, and HP PSC 720, 950, 1610 series. Engineered for reliable performance and color accuracy while maintaining printer warranty protection. Cost-effective solution reducing printing expenses by up to 90% compared to OEM cartridges.