The HP 504A CE250X CE251A CE252A CE253A Toner Set is a genuine/original product specifically designed for use with HP LaserJet CM3525 and CM3530 printers. This complete set includes cyan, yellow, magenta, and black toner cartridges, providing high-quality color printing for your documents and images. Made by HP, the brand known for printers, this toner set ensures reliable and consistent results with every print, making it an essential supply for any business or home office.