NEW ITEM - Futures Fin Compatible We received a small portion of custom order fins from a surf shop. Although the sizes are slightly different, these fins are designed with CAPTAIN FIN's CF TWIN ESPECIAL ST WITH TRAILER SINGLE TAB FUTURES twin stabilizer as a benchmark. The performance-oriented template and stiffer fiberglass material provide quick acceleration and high controllability. In addition to the two front twin fins, a smaller trailer fin (stabilizer) is included. This allows you to enjoy the unique speed and looseness of twin fins, while the trailer adds stability and drive during turns. Suitable for small to large waves. The material used is the same as that used by major manufacturers. The slightly coarse weave of the VOLAN cloth is very cool. You can also enjoy riding with just the twin fins. This is a recommended fin set. ◎Accessories are not included. ◎There are minor scuffs from the manufacturing process. This is a great deal for those who don't mind. ◎Please understand that the actual color may differ slightly from the product image due to camera resolution. Size Twin Fins Height: Approx. 132mm Base: Approx. 122mm Deep fin box height Center Stabilizer Height: Approx. 78mm Base: Approx. 73mm Shallow fin box height ◎There are two types of Futures fin box heights: deep boxes with an "f" mark and shallow boxes with an "x" mark. We cannot accept returns, exchanges, or complaints due to incorrect fin box height. Please check your board before purchasing. If the fins are difficult to attach or detach, please adjust them by sanding, etc.