Resistant to Rust and Corrosion The fin screws are made of high quality stainless steel for high strength, stability, rust resistance and resistance to fresh or salt water corrosion. Unbreakable, robust and durable. So you can surf safely. Silicone Ring Design The black silicone ring between the screws is a non-toxic silicone ring that makes the screws more stable and increases the life of the product. You can swim in the sea for a long time without having to worry about Damaged. No Installation Tools Required Installation is very simple and does not require any other tools. It can be easily tightened with a Phillips screwdriver. Simply screw it into the correct position. Manual inspection for quality control means that no tools are required. Suitable for Most Surfboards Suitable for most surfboard standards such as longboards, SUPs and paddleboards. This screw is a special screw for surfboard rudders. Is standard on most surfboards today. Thus meeting your various needs. Durable Materials This product is a surfboard screw made from non-toxic, durable stainless steel sheet, made from stainless steel for a durable screw material. An economical and practical tool Fin screws are a very useful tool. The surfboard can be fixed very well. You can use it for long periods in the sea. This is not only economical, but also saves time and energy. Easy to use It is very easy to install and you do not need to use any other tools. Hand-tested for quality control, which means no tools are required. The ideal tool for surfboarding Suitable for most surfboards such as longboards, SUPs and paddleboards. Slide it into the fin box, insert the fins, insert the screws and tighten with a single screwdriver. Is standard on most surfboards today. Specification Weight: 8g/pc Material: Stainless steel Color: Silver Package includes: 6pcs*Surf Thumb Fin Screw NOTE: 1. As each monitor has different display resolution and light settings, the color of the product may be slightly different, depending on the actual product. 2. Due to manual measurement, an error of 1-3mm is inevitable!