Welcome to Litzee Store! Always keep extra screw and fin plate in your paddle bag for replacement. This set of Screw & Fin Plate is a universal fit for most fin boxes on the market and requires no screwdriver for installation. Designed to adjust fin position forward or backward, ensuring precise fin placement. Features: - 304 stainless steel construction, rust and corrosion resistant - Eliminates the need for a screwdriver during fin installation - Plate dimensions: 14 x 14 x 3mm (0.55 x 0.55 x 0.12in) - Compatible with industry-standard fin boxes - Includes a rubber O-ring to prevent loosening during use - Ideal replacement for longboard surfers Specifications: - Material: 304 stainless steel - Model: M4 - Screw size: 4 x 30.85mm (0.16 x 1.21in) - Thread length: 17mm (0.67in) - Plate size: 14 x 14 x 3mm (0.55 x 0.55 x 0.12in) - Item weight: 9g (0.3oz) per pack - Package size: 12.5 x 8 x 1cm (4.9 x 3.1 x 0.4in) - Package weight: 28g (1.0oz) Package List: - 3 x Screw - 3 x Plate Please review the product details, features, and specifications carefully, including size and dimensions, to ensure compatibility with your needs. Note: Due to lighting effects, monitor settings, and manual measurement, slight variations in color and size may occur between the images and the actual item. If you have any questions, feel free to . We aim to respond within 24 hours. Enjoy your shopping!