WUZHOU Surfboard Fin Screws with Plastic Box, Silver Surfboard Tail Fin Screw Anti-rust Fin Plate Replacement Kit Stainless Steel Surfboard Accessories Silicone circle designThe screws are equipped with black silicone rubber rings. The rubber O-ring can reduce the looseness during surfing, make the surfboard screws more stable and increase the service life of the product. Durable MaterialThe fin screw is made of high-quality stainless steel, which is not easy to rust. You can swim in the sea for a long time without worrying about damage. Easy InstallationThe installation is very simple without using other tools. It can be tightened manually in only two minutes, or the stainless steel fin screws can be easily tightened with a cross screwdriver. Color: silver Size: M4*19mm Quantity: 4pcs Kind tips: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding. 3. Only the above package contents, excluding other products.