[Rust and Corrosion Resistant]: Fin screws is made of high quality stainless steel material with high strength, good stability, rustproof and corrosion resistant in fresh or salt water. Not easy to break, strong and durable. So you can surf safely. [Silicone ring design]: The black silicone circle between the screws silicone ring, can make the screws more stable and increase the life of the product. You can swim in the sea for a long time and you don't have to worry about the broken problem. [No Tools Required]: It's very easy to install and you don't need to use any other tools. Can easily be tightened with a Phillips screwdriver. Simply screw it into the correct position. Hand-checked for quality control and means no tools are ever needed. [Easy to carry ]: Each set of 10 screws that is convenient for storage and not easy to get lost. It's lightweight and portable so you can take it out as you need it. Exquisite production and light weight make it a handy surfing tool that is very suitable for travel. [Suitable for most surfboards]: Suitable for most surfboard standards such as longboard, SUP and paddle board. The screw is suitable for the special screws of the rudder of the surfboard. Are standard on most surfboards today. and thus meet your diverse requirements. Colour: silver Material: stainless steel Package Contents: 10 * Fins screw Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.