Features: _x000D_ This product is a surfboard screw, which is made of non-toxic material. _x000D_ Suitable for most surfboard standards such as long board, SUP, and paddle board. _x000D_ Made of premium stainless steel, anti-rust and corrosion resistant. _x000D_ Can be tighten easily with a cross screwdriver. _x000D_ M5 is suitable for plastic single fin, M4 is suitable for fiberglass single fin. _x000D_ _x000D_ Specifications: _x000D_ Material: stainless steel _x000D_ Color: as picture shown _x000D_ Opitons: M4, M5 _x000D_ Weight: Approx. 25g _x000D_ _x000D_ Package List: _x000D_ 3 Pcs * Screws 1This product is a surfboard screw, which is made of non-toxic material. 2Suitable for most surfboard standards such as long board, SUP, and paddle board. 3Made of premium stainless steel, anti-rust and corrosion resistant. 4Can be tighten easily with a cross screwdriver. 5M5 is suitable for plastic single fin, M4 is suitable for fiberglass single fin.