Rare art glass specification quad fins. They look very beautiful when viewed in the sunlight and can also be used as interior decoration. A small quantity has been received, so please purchase them as soon as possible if you want them. New, unused. Quad fins compatible with Future Fins. Similar to Machado Quad (in my personal opinion). Performance quad fins designed with a dip section that combines responsiveness with flex, and a hard base section that provides excellent drive. These fins combine the flow of a traditional twin fish with the control performance of a performance quad. ◎ The material is fiberglass, which is also used by major manufacturers. Although it is a no-brand product, the VOLAN color is very cool and gives a luxurious feel. The sanding on the surface is also lovely. ◎ The color may be slightly different from the actual product due to the resolution of the camera. Please understand. I am also listing other items. ◎ Size Twin Fin Height: approx. 124mm Base: approx. 138mm Box height: deep Rear Fin Height: approx. 78mm Base: approx. 105mm Box height: shallow ◎ There are two types of Future Fin box heights: deep with the "f" mark on the box and shallow with the "x" mark. Returns, exchanges, and claims due to incorrect fin box height cannot be accommodated. Please check your board before purchasing. Thank you for your understanding. If the fins are difficult to attach or detach, please adjust them by sanding, etc. ☆ The included soft case is slightly deteriorated and should be considered as a bonus. ◎ Although new and unused, there may be slight scratches or color unevenness due to the manufacturing process or storage. This is a very good deal for those who don't mind.