The longitudinal bar of the spike-tooth rake is in a "Z" shape, and the spikes are arranged at the intersection of the longitudinal bar and the horizontal bar. Combine 3 to 4 longitudinal bars in a "Z" shape with 3 to 5 horizontal bars as a section, and then use a rigid traction frame to connect several sections. Because each section can swing independently, the spiked rake can well adapt to uneven terrain, and the work is relatively stable. http://www.sungardentools.com/rakes/thatching-rakes/