Tieman as new unused 21 metre carbon steel b double . Tankers have never been used . A tanker 2 compartment 21900 litres B tanker 3 compartment 29700 litres total 51600 litres . Mechanical foot valves , api outlets , pressure and vacuum vents ,Wind down legs and safety rails on both tankers . Built for oil in extreme conditions with steel spring suspension and EBS brakes . 4mm steel walls and 4 mm steel dished ends . This tanker set being sold at half replacement cost and will suit many applications .Ring for details .