Basics Brand cartridges are manufactured at ISO 9001:2000 registered facilities using returned, original equipment cartridges. These cartridges are designed, engineered and manufactured to meet or exceed OEM performance while ensuring top quality and consistent output. The plastic shell contains an average of 90% post-consumer recycled materialBlack.Yields 10,000 pages.OEM# 90A.HP LaserJet Enterprise 600 M601N, M601DN, M602DN, M602N, M602X, M603DN, M603N, M603XH, M4555 MFP, M4555F MFP, M4555FSKM MFP, M4555H MFP.Contains a minimum of 70% post-consumer recycled material.