Dorsal Longboard Surfboard Fins Smart Screw and Plate FCS and Futures High-quality Stainless Steel Smart-Screw and plate, hand-tested for quality control. Smart-Screw head accepts industry-standard fin tools, which come standard with most board shorts today. The Smart-Screw and plate fit industry-standard center fins and boxes. No extra drag over standard screw, never compromising fin performance. Say Goodbye screwdriver! Replacing old screws with the Smart-Screw means never having to use a screwdriver and never again being frustrated that you forgot your screwdriver or be hassled by airport security. One tool does it all! Adjusting the center fin in the water is simple, allowing for compensation of rising or falling tides and swells without leaving the line-up. Surf with confidence that your expensive center fin is mounted stronger than finger tight.