Operating at 16″ with wide wings and a point, getting below the compaction pan. The idea is the legs are at 500 mm spacings, the tines and wings pull up the soil from below breaking and cracking the pan and soil. The cracking allows the roots to grow through the soil profile to get to deep moisture, nutrients and aids drainage through wet times. Over subsoiling collapses the soil causing compaction by removing soil structure. 
