Professional-grade refill kit designed for HP Officejet 4315 compatible cartridges. This comprehensive kit includes 50ml each of cyan, magenta, and yellow ink, allowing you to refill your existing cartridges multiple times. Kit contents: 150ml premium quality aftermarket ink (50ml cyan + 50ml magenta + 50ml yellow), 50ml cartridge cleaning solution, powder-coated application gloves, 3 precision injectors, and 1 vacuum/refill apparatus. Perfect for high-volume printing environments with impressive page yield per refill. Cartridges not included - bring your own compatible HP cartridges. Estimated page yield: up to 5000 pages per full refill cycle. Easy-to-use refill system with included tools and protective equipment.