Feature 1Application: Suitable for heavy duty construction under tough conditions and suitable for ocean users. 2180 Adjustable: The ratchet can be adjusted 180 degrees and can be easily fixed or released by turning the handle. 3Polishing Treatment: The surface of the ratchet rail mount has been highly polished to a beautiful mirror like. 4Material: Marine 316 stainless steel, rust resistant and oxidation resistant, can withstand harsh environment. 5Installation: Suitable for deck or bulkhead mounting, and the installation is not difficult.Item Type:RatchetRailMountMaterial: 316 stainless steelSurface Treatment: Highly polished to a beautiful mirror like finishThread Size: 1in/2.5cm .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x RatchetRailMountNoteIf you need to loosen or tighten the ratchet, operate the screws on the side of the handle.