Slidings and locking fins making it a movable center fin for inflatable paddles. Specifications:Material: PlasticColor: BlackPackage Weight: approx.25gSize: approx.41x14mm/16.14x5.51inPackage Includes:5Pcs Surfboard ClipNote:Please allow 1-3mm error due to manual measurement. Buy Watershed Balancing Rudder Black Tail Vane Board Fin, Surfing Board... Easily to disassemble assemble, and connect tightly with an anti-lost rope. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks! HOZIBE SUP Center Fin Stand Up Paddle Board Surfboard Tail Rudder Surfing Watershed Fin FCS FIN 5Pcs Watershed Fin Clip Paddle Board Surfboard Tail Clip Paddle Board Clips good-quality nylon material, wear-resistant, solid and to use. Shop for Legal Pads in Writing & Legal Pads. Buy products such as Pen + Gear Wide Ruled Legal Pads, 8.5x11, Canary Paper, 50 Sheets, 12 Pack at and save Strengthening the fixation of the water distributor and the base to make the fin more firm.