The 4 Pack C500 C505 Imaging Unit is a set of drum cartridges designed for use with Xerox printers. This product includes one black, one cyan, one magenta, and one yellow cartridge, suitable for laser print technology. The cartridges are compatible with models such as Xerox VersaLink C500N, C500DN, C500DT, C505DN, C505XL, and C505S. Manufactured in China, this product is designed to provide high-quality printing results and is compliant with California Prop 65 Warning regarding potential chemical hazards.