1. Suitable for use in stone and root obstructed soil. 2. Suitable for light and medium soil conditions. 3. Used for losing and aerating soil to a depth of nine inches. 4. Prepares seed beds quickly and economically. 5. When one tyne strikes a hidden object, the others continue to work at the correct depth. 6. Spring Loaded assemblies derive their strength from heavy-duty angles, which once fixed to the immensely strong main frame cannot move or strain out of position.