Games Workshop Promethium Tanks on Cargo-8 Ridgehauler Trailer $111.50 This multipart plastic kit allows you to build a Ridgehauler Trailer with a set of Promethium Tanks, for use with a Cargo-8 Ridgehauler. You can construct this trailer with six or eight wheels, and the Ridgehauler Trailer's modular assembly options allow... Add to Cart