Spike tooth harrow refers to a harrow with straight steel teeth set in horizontal bars. Pointed metal spikes which can stir soil to a depth of 1" to 1.5" play an important role in operation. High carbon steel spike are bolted into bars. Direction of spike teeth can be changed to suit different purposes. Nearly vertical direction is designed for deep penetration and cultivation, while almost flat teeth are designed for leveling action. Where spike tooth harrow can be used? Breaking up clods, manure and grasses into finer pieces so that they can be evenly spread across the field. Smoothing garden plots, fields, arenas and landscaping areas. Loosening crusted soil, aerates legume crops like alfalfa and uncovering overwintering insects.