FUTURE Plug Compatible Small Wave Strongest! Twin Keel Fins Model: SW-DRIVE (Swallow Drive) 【Features of Keel Fins】Overall wide for stability. ★SW (Swallow) The fin shape is like a swallow's (tsubame) wings, with the top of the fin extending backward and flexing flexibly. Also, this length to the rear functions to prevent the fin from unintentionally coming out during top action. It makes it easier to turn the board when ripping, so try hitting it hard. The slit part of the classic SW fin has been removed and updated to provide speed and drive. Please use it from small waves to average-sized waves. This is a very easy-to-ride, friendly twin fin design with a keel type. I think anyone can ride it without any discomfort. Recommended for surfers who want to draw a unique smooth line with twin fins! 〈Wave Size Compatibility〉 Small Waves (Knee to Chest) ●●●●○ Medium Waves (Chest to Shoulder) ●●●●● Large Waves (Head to Double Overhead) ●●○○○ 〈Performance Evaluation〉 Action ●●●●○ Drive Feeling ●●●●○ Speed Feeling ●●●●● Set it on your board and glide while feeling the new feeling! I hope you enjoy the fun of twin fins. Brand new, unused. Shipping included. ◆Product Description◆ Honeycomb core lightweight design, using black cloth Made with high-quality materials, carefully crafted by fin craftsmen. ※Please understand that there may be minor scratches due to sanding. Search Keywords Quiksilver Billabong Hurley JS Dakine DAKINE Al Merrick Surfing Surfboard Rip Curl Wet Deck Pad Placebo lost Shortboard firewire justice Lost Al Merrick fcsⅡ Twin Fin Keel Fin Tri Fin Quad Rob Machado FCS FCS2 FUTURE Future Fin System/Fin Box...FUTURES