There is an old saying on Wall Street that says you should buy the "picks and shovels" companies for a growing industry.

This is a reference to the California Gold Rush, during which it was joked that the only people guaranteed to make money were the ones supplying the mining equipment.

If you can find the best-positioned suppliers to grow industries, you can make a tremendous amount of money.

Today's HX Income idea is one of those companies—it is a leading provider of equipment to the single best-growing industry of the last few years.

Recently it sold off on problems at a competitor, and we think it presents a good income opportunity.

Here is the idea …