The product is a set of 5 black toner chips specifically designed for Ricoh MP 401SPF, MP 402SPF, and SP 4520DN printers. These reset chips are compatible with the specified Ricoh models and utilize laser print technology for high-quality printing results. Made in China, each unit ensures reliable and consistent performance, allowing users to effortlessly refill their toner cartridges and maintain their printing efficiency. Ideal for professionals and home users alike, this product offers convenience and cost-effectiveness in their printing needs.