This agri fab curved spike aerator is great for opening up the soil surface to let grass roots get the air and moisture they need for healthy growththe working depth of the agri fab 45 0525 towed spike aerator by adding up to 45kg of ballast to the weight tray depending how on gentle or aggressive the approach thatrsquos requireda transport position means you can travel from site to site without the spikes digging in while a foldable tow bar works to significantly reduce the storage footpr