This tanker carries 3,000 gallons of water and is loosely based on San Diego's water tenders and similar tanker trucks. It's used to provide a source of water for brush rigs and engines at brush fires. It is like a mobile fire hydrant. One good thing about Lego's Jack Stone lineup were the chrome parts – including these chrome tanks. The design uses other Lego chrome pieces, lots of Studs Not On Top building techniques, and a 7-wide design.