Toner cartridges deliver sharp detail and consistent gray scale for charts and graphs so you get business-quality results on a wide range of laser papers. Make an impact with professional-quality, black/white documents and crisp, black text. Keep printing costs low while maintaining productivity. HP toner cartridges deliver consistent, uninterrupted printing. Because cartridges are designed for exceptional reliability, you avoid wasted supplies and expensive delays. Replacement cartridges are quick and easy to install. Cartridges are designed for use with Hewlett-Packard LaserJet 400 M401n, M401dne, M401dne, M401dn, M401dw and M425dn. Each cartridge yields approximately 6,900 pages.