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 adjustment of the fin position forward or backward, ensuring precise fin placement. Features: - Made of 304 stainless steel, 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 help prevent loosening during use - Ideal and essential 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 Note: Please check the product dimensions to ensure compatibility with your needs. Due to lighting, monitor settings, and manual measurement, slight variations in color and size may occur.