The CA0556 Pull-Type Core Aerators are perfect for garden tractors, zero turn mowers and utility vehicles to relieve soil compaction, and allow air circulation in grassy surfaces. They are designed for residential use and other light applications. They utilize replaceable hardened spring steel spoons mounted on rotating discs. These spoons pull cores up to 2 1/2" in length from the soil profile. The spoons are spaced laterally every 4". Pulled cores are deposited on the surface for subsequent drying, pulverization, or removal. Weight can be added to the weight tray to help achieve maximum spoon penetration.