What are the size/ weight restrictions for the checked luggage on internal flights?

The maximum standard for a checked luggage: Each piece should not exceed 50 kilograms in weight (110 pounds) and 40×60×100 centimeters (16×24 ×39 inches) in size. For economy class tickets, each one can take only one piece of free checked luggage with maximum total weight of 20 kilograms (44 pounds). The excess amount will incur an additional charge reckoned by distance and weight which will be known at the airport.