How does Mr. America build forearm strength? The Wrist Roller, of course. It was a great method then and still a greta method now. If you could peek into the training log of just about every strength champion throughout history, there’s a pretty good chance you’ll find the wrist roller as a part of their respective programs.
The wrist roller is also a very good choice because it is simple and very effective: Mr. Lacy’s choice here is just a sturdy tree branch with a cord tied to it. You can get more fancy than that if you like but when it all comes down to it, that is minimally all you need.