Super elastic liner in milking units of UNIBOX differs by special higher effect. Our liner assures higher yield of milk and minimum sliding level among those available in the market. Special design of cone shape and elastic liner of special material assure milking process without cup coming down onto the base during milking, and eliminating mammilla canal compression. Hence, for good passage of mammilla canal, additional pulling off of the milking unit at the end of milking process that increases the load on udder and injures the teat is not required.