The Tusa Liberator fins (SF-5000 and SF-5500) are designed to maximize energy transfer to provide optimum propulsion. The side rails of these fins are made with a specially designed pliant material that gives the entire blade a flexible bending force. Dynamic stabilizers on the blade surface and rails facilitate water flow which generates maximum propulsion with minimum exertion. This racy design is made from the most advanced and durable materials to provide ideal flexibility and stability. This is a test
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