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 OEM performance while ensuring top quality and consistent output. The plastic shell contains an average of 90% post-consumer recycled material OEM 55A. HP LaserJet Pro MFP M521DN, M521DW, M521DX, M521DZ, LaserJet Enterprise 500 MFP M525F, M525DN, LaserJet Enterprise Flow M525C, LaserJet P3010, P3011 P3015, P3015D, P3015DN, P3015N, P3015X, P3016. Contains a minimum of 91% post-consumer recycled material. Yields 6,000 pages. Black.