From True Ames:
As the predecessor to the 4A, this template is important. It was conceived in the early ‘70s, and is a direct descendent from the original Stage 4 that swept the surfing world. We offer this fin to be used as you see fit. Positive reports have come in from a wide range of applications.
We'll just say this is one of the most classic, fundamental designs of a single fin for longboards… ever!!
own it from $10 a week with More info