The screw is made of high-quality 304 stainless steel, which does not rust easily and remains durable and corrosion resistant even in or salt water. [Silicone Washers] The black silicone washers allow the fin screw and surfboard to be fixed more firmly without damaging each other, extending the life of the board and screws. [Easy to use] The bottom of the SUP screw is designed for easy installation and can be tightened directly by hand without additional tools. You can also use pointed pliers for tightening. Wide range of applications: This SUP screw is suitable for most standard surfboards and provides comfort when surfing outdoors. It is the perfect gift for yourself or a loved one, a friend or family member. Product description: Pack of 12 SUP Screw, Fin Screw, SUP Accessories for Box Surfboard, Surfboard, Paddle Board, Longboard Outdoor Product Parameters Name: SUP fin screw Thread type: . Material: stainless steel. Color: Silver Function: The fin screw is used to attach the fins to the surfboard. It ensures that the fins sit firmly on the surfboard, so that the surfer can better control the direction and stability of the surfboard when surfing. Installation To install the SUP fin screw, the fins must be inserted into the slots of the surfboard, and then the screws are used to attach the fins. The screws are separated from the surfboard by a silicone disc to that neither the board nor the fins are damaged. To prevent the screws from loosening, they must be checked and tightened regularly. The need for screws The fins are an important part of the surfboard. They help the surfer maintain balance and control the control of the board. If the fins are not properly attached to the board, they can cause the board to lose its balance and stability, which can pose a safety risk for the surfer. The screw ensures that the fins are firmly connected to the board, ensuring safe and surfing. Package Contents: 12 pcs x surfboard fin screws Only the above package content, other products are not included. Note: Light reflection 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.