Mantis Tiller 7321-00-02 Aerator/Dethatcher Attachment Combo Aerator and Dethatcher Attachment Combo Pack for all Mantis Tiller/Culitvators Aerator perfect for use in compact, clay soil 4 sets of tempered steel blades Aerator cuts into soil under the lawn; dethatcher quickly removes weeds 60 spring-steel picks dethatch a 15-inch swath with a single pass