It is an epoch-making fin developed by Mark Thomson, the father of TOMO surfboard shaper Daniel Thomson.

Mark Thomson 's board label "Crypt surf Technology" has tested and refined this fin over 20 years.

This fin minimizes the resistance of the water on the fins, gives the speed by telling the board directly the inputs to the riders board, and it will be the fins that let the rider control the boards at will.

On the back of the high performance of this fin it is possible to make full use of the design of the dynamic fin (water always contacts the fin and the resistance of the water and the fin is minimized), maximizing the flow of water It is to be possible.

We call this "active laminar flow".

With this Laminar Flow, when turning, the maximum power of the board is communicated to the water, and in the final phase of the turn, water weighed on the fin can be released efficiently without resistance.

Not only TOMO board but also general surfboard design will be able to experience the difference. It is a surfboard fin set that makes surfing far more enjoyable.

Tom Curren, Kelly Slater, David Rastavich, Brad Gerlach, Stu Kennedy and others are also tested and loved fins, this is the real next level fin.

[Contents of set] - FCS II tab  2 fin set.

· Screws required for screw insertion behind the FCS II are required, tighten the screws to install them.

【Disclaimer】
· For hand-crafted goods, there may be some variations in fin finish depending on manufacturing time.

If the fin plug can not be mounted smoothly on the fin box, please scrape the fin base somewhat with sandpaper etc. and install it. · Because there is no fin selling of fin alone, please pay attention to lost or damaged fins etc.

[Materials] Fiber glass finish with consistency in fin flex

YES SURF