The product is a 4 pack of Brother TN-635XL high yield toner cartridges in cyan, yellow, magenta, and black colors. These cartridges are compatible with Brother printers and are designed for laser print technology. Made in China, this set includes 4 units of the TN635XL model, providing a high volume of prints at a discounted price of $300 MSRP. Perfect for users looking for reliable and high-quality printing supplies for their Brother printer.