1Fixed Chain: Equipped with stainless steel fixed chain, the cover and the main body are connected by bead chain to avoid dislocation, which can effectively prevent the loss of the cover. 2Identification Letter: The surface of this boat deck filler is printed with identification letter, which is easy to view and distinguish, and easy to use. 3Polishing Treatment: The surface adopts mirror polishing treatment, with higher accuracy, brightness, and polishing degree, the reflection is clear and visible, showing more high end and generous. 4Anti Corrosion: Premium stainless steel 316 material is used to effectively prevent sea salt corrosion and achieve rust prevention effect. 5Widely Applicable: This marine hardware tool is widely used in yachts, ships, RVs, trailer tanks, etc., with a wide range of uses.