The rail market is one unbelievable bull market right now, Jim Cramer told viewers on his "Mad Money" TV show Tuesday.
But when investors are playing a cycle, be it the aerospace cycle or the rail cycle, they shouldn't just buy direct plays -- they should also buy companies that touch the booming cycle, he said.
All Aboard Koppers
Koppers is a stock Cramer first recommended a little over a year ago, and it is up about 46% since then. It is "an oblique play" on railroads, he said. It makes rail ties and rail splitters.The "trick" with Koppers is that it's really a chemical company, Cramer said. Rails account for just 37% of the company. However, when you get a cycle, "impure" plays such as Koppers are great "because The Street doesn't notice them until they report great numbers," he said.