[Durable Material]The screw is made of excellent stainless steel, not easy to rust, be more durable in fresh or salt water. You can swim in the sea for a long time and needn't worry about the broken problem. [Silicone circle design]The black silicone circle matched between the screw and the plate make the surfboard screws more stable and increase the use-life of the product. [Quantity Size]Package include 4 sets surfboard longboard fin screws, quantity more without price increase [Wide Application]This surfboard screw is suitable for all standard, futures surfboard fin boxes for longboard, paddleboard, SUP, inflatable SUP and single fin. Its perfect gift for yourself and your friends Quantity: 4 pieces Product color: silver Product size: 4*19mm