The longest tender in India

It is unique in that it has the longest tender structure of any locomotive class in India, with 12 wheels. This enabled it to make prolonged runs without stopping for coal or water in the Thar Desert.

The 12-wheeled tenders could carry 10 tonnes of coal and 7200 US gallons of water, and weighed 64.5 tonnes in working order, more than the locomotives themselves which had a weight of only 57.5 tonnes.