Includes 6 replacement water filter cartridges (1 year supply). For use with the following Keurig Single Cup Home Brewing Systems purchased after August 2007: Elite B40, Classic B44, Ultra B50, Signature B60, Special Edition B60, Ultimate B66, Platinum B70, Select B77. Great coffee starts with clean water. For use with the Keurig Water Filter Starter Kit. Made and printed in China.