Udukkai is a south Indian divine musical instrument that goes with lord siva and ammans. In temple functions and festivals udukkai is used. Udukkai is made up of jackfruit tree wood and goat skin. Udukkai consists of 3 portions. 2 Portions looks like broken half coconut. These two portions are kept back to back that is larger diameter portion on both outer side and small diameter portion on inner side. This two portions are fixed on a cylindrical wood piece. The specification of the divine musical instrument udukkai goes by the outer diameter. The leather fixed on both sides are tied to each other with ropes. By pressing in the center portion the tightness can be slightly varied.