Model: HP Q7551A, Q7551X toner cartridge; Suitable for use in HP Laser jet P3005/ M3027/ M3035; 6000 pages for Q7551A, 12000 pages for Q7551X (page yield at a coverage of 5%), with chip. Package Size: 35.5 * 14.5 * 24.0 ( cm ) Gross Weight/Package: 2.64 ( kg ).