Always keep an extra screw and fin plate in your paddle bag for replacement. This Screw & Fin Plate set offers a universal fit for most fin boxes on the market and requires no screwdriver for installation. Designed to allow easy adjustment of fin position, it enables you to move the fin forward or backward and install it in the ideal position.Features: - Made of 304 stainless steel for rust and corrosion resistance - Eliminates the need for a screwdriver during 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 and essential replacement set 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 title, features, and specifications carefully, and note the size and dimensions to ensure compatibility with your needs. Note: Due to lighting effects, monitor settings, and manual measurement, there may be slight variations in color and size between the images and the actual item. We appreciate your understanding. If you have any questions during your shopping experience, please . We will respond within 24 hours. Wishing you a pleasant shopping experience!