Surfboard Screw,Stainless Steel Fin Screw Sup Fin Screw Surfboard Longboard Fin Screws Universal Fin Screws for Sup,Single Fin,Paddleboard [Durable Stainless Steel Material]:The surfboard screws are made of high quality stainless steel, sturdy and durable,have good toughness,and are not easy to break.Corrosion and rust resistance, long service life,support for use in fresh water or salt water [Silicone Ring Design]:A black silicone ring is used between the screw and the circuit board to make the surfboard screws more stable,a rubber O prevents loosening while surfing [Easy to Install and Use]:Just attach the longboard screws in the correct position. You can tighten it manually yourself or with a Phillips screwdriver.No complicated tools required [Wide Rang of Use]:Ideal surfboard accessories.Suitable for all common surfboard center ribs such as longboards,backboards and paddleboards,SUP,FCS,etc.Widely used in mechanical devices,electronic devices,hardware lighting,bridge building,etc. [Convenient to Carry]: screws meet your different needs.Exquisite production and light weight make it a handy surfing tool that is very suitable for travel. Color: silver Size: Length 35mm, Thread Outer Diameter 4mm Quantity: 4pcs 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.