TRUE IMAGE HECE250X-B504X Compatible Toner Cartridge Replacement for HP CE250X Black Premium quality toner with easy to install design Estimated page yield of 10,500 pages @ 5% coverage based on ISO/IEC 19752 (letter/A4 size) Compatible with HP Printers: Color LaserJet CP3520, CP3525, CP3525X, CP3525DN, CP3525N, CP3530, CM3530, CM3530FS 1-pack True Image high yield black toner cartridge replaces HP CE250X Warranty: Lifetime 100% satisfaction guarantee