Staple cartridges are designed for use with Xerox copy Centre 232, 238, 245, 255, 265, 275; copy Centre C35, C45, C55 digital copier, C165, C175; WorkCentre 232, 238, 245, 255, 265, 275, 5030, 5050, 5135, 5150, 5638, 5645, 5655, 5632, 5665, 5675, 5687, 5735, 5740, 5745, 5755, 5765, 5775, 5790, 5845, 5855, 5865, 5875, 5890; WorkCentre M35, M45, M55, M165, M175; WorkCentre Pro 35, 45, 55, 165, 175, 245, 255, 265 and 275. Cartridges are developed specifically to keep your Xerox equipment operating at peak performance.