I know only that they were an American brand, that they were made of Tange steel, and had Shimano DX components. I believe they were made of butted tubing. The quality is evident from the picture, nice drop outs and construction. Very ambitious paint scheme. The only other one I have seen was all gloss black. I think rigid MTBs from the 1980's and 1990's get short shrift when considering their quality and characteristics. They are fine bicycles, even if they don't have suspension and disc brakes.