Professional HP 3777 compatible color cartridge refill kit designed for easy at-home ink refilling. This comprehensive refill solution includes 50ml each of cyan, magenta, and yellow ink formulated for HP DeskJet, OfficeJet, and PhotoSmart printer models. Compatible with HP 3777 cartridges and similar ink systems. Kit contents: 3x 50ml premium color inks (cyan, magenta, yellow), 1x 50ml cartridge cleaning solution, 1x pair powder-free application gloves, 3x precision injectors, and 1x vacuum/refill apparatus. Achieve high page yield by refilling your existing cartridges multiple times. Save significantly on printing costs while maintaining print quality. Note: Original cartridges not included. Perfect for high-volume users and cost-conscious consumers.