Drying tunnels are those which evaporate water from the leather after the process of wetting leather. This is the machine in which there is a tunnel which helps drying the leather. It is tunnel shaped machine in which there is a circular elongated tube where the leather is dried. These drying tunnels are available in various configurations. Depending upon the configuration of these tunnels poles are used in those tunnels. There can be only one pole or their can be four to five poles in one drying tunnels. Clips are those in a drying tunnel which can hold the leather for sometime so that the water in leather can be evaporated from that part and which is no wet later.