Nai - Barber
A Nai is the equivelent of an American barber.  He sets up his shop on the side of the road where anyone can come and get their hair cut or face shaven.  Their wives are often midwives and play an important role in the comunity.  The Nai are a part of the Shudra caste.  Within the caste of Shudra there are many different groups.  Each one of these groups performs a service.  Their specific service is a birthright and is somewhat similar to unions in the U.S.