The Sitrex TCL / TCM models spring shank cultivators are ideal for cultivating, trash removing or breaking up the hard crust on the field. The ground engaging reversible steel points are mounted on a spring shank to swing back if they hit an obstruction. The front and rear shanks are grease able for longer wear.TCL is a light duty model, while TCM is a medium duty model which is heavier, has more stronger springs and stronger frame. Both models protected by double spring tip, auto re-set shank pivot point with grease nipple, standard 8" sweeps and compatible with Cat. I & II 3pt.hitch.