Renewable Toner Compatible Toner Cartridge High Yield Replacement for HP 55X CE255X for use in Laserjet P3010 P3015 M521 M525 MFP (Black, 2-Pack) LOW COST, HIGH VALUE. RT replacement for HP 55X toner. Printing cost is as low as .005 cents per page, up to 60% less than HP CE255X original toner cartridges. QTY: 2-pack (2 Black) RT Compatible HP 55X toner cartridges High Yield: 12,500 pages based on 5% coverage Compatible with HP LaserJet Enterprise P3010, P3015, P3015d, P3015dn, P3015n, P3015x, P3016, M521dn, M521dw, M521dwk, M525c, M525dn, M525f MFP LIFETIME WARRANTY. We honor our warranty regardless of purchase date, even if the Amazon return window has closed