This is a medium duty core aerator 3pt type attachment. Constructed with a HD 13″ drum design with a full frame. Sand or fluid can be added to the drum for extra weigh. The frame is HD constructed so weight can be added on top if needed for hard, compacted soil conditions. The replaceable 7″ spoons are heat treated for long life. This unit will pull a 1/2″ by up to a 6″ plug of soil out. It is for longer term aeration.