LxTek Compatible Toner Cartridge Replacement for HP 87A CF287A (1 Black) for HP LaserJet Pro M501DN M506X M506DN M506N MFP M527F M527DN M527Z Printer LxTek compatible toner cartridge replacements for HP 87A have been awarded ISO9001 certification, and we have independent laboratories periodically verify product quality to ensure a smooth user experience. Page Yield: 9,000 pages per toner cartridge at 5% coverage Compatible Printers: HP LaserJet Pro M501N, M501DN, M506X, M506DN, M506DH, M506N, MFP M527F, M527C, M527DN, M527Z Printer Package Contents: 1 Pack (1 Black) compatible toner cartridge for HP 87A Guarantee: 1-year limited warranty / Shelf life: 18-24 months