CLASSIC DESIGN: Depth 4.55 inches, base 4.37 inches, area 14.76 square inches. This classic fin design has been tested over decades, it's a preferred choice for beginners and expert surfers. Perfect for different wave conditions and different types of surfing waves, help to balance the speed and control and helpful in fast-breaking waves.<br> LIGHTWEIGHT and RESPONSIVE: High-performance fins made of durable Fiberglass-Reinforced Nylon, 3 fins weigh 240g. The fiberglass construction makes the fins strong and flexible, which enable the board to be neutral, free, and fast through the water and provide high stability, control and manoeuvrability. <br> 3 FINS for MULTIPLE USE: These thruster fins suitable for surfboard, shortboard, funboard or longboard that use Future style fins. Plus the accompanying tools, you can install it on any surfboard you like.<br> FREE ACCESSORIES: It comes with 3 Future style fin screws, 1 key and 1 wax comb. It's easy to install and operate, we have the tools ready for you, it takes just seconds to insert and remove the fins. With marine grade stainless steel screws, no need to worry about being corroded and rusted by seawater, it can be used continuously.<br> ABAHAUB WARRANTY: we've been manufacturing fins for over 10 years. We know what we're doing and we stand by our products. If you're not happy with our products, we'll offer you replacement or refund with "No Question Asked" warranty.