❀316 Stainless Steel Construction: Made with AISI 316 stainless steel containing for improved resistance to rust and oxidation. ❀Accurate Dimensions for Proper Fit: Features 1 1/2 inch (38mm) inner diameter, 3.35 inch (85mm) height, and 74mm top plate diameter with 6.5mm fastener holes. Works well with different marine vessels and recreational vehicles as a consistent closure option. ❀Traditional Lost Wax Manufacturing & Refined Finish: Produced using traditional lost wax process for consistent dimensions and clean edges. The polished exterior enhances appearance, minimizes buildup, and makes easier. ❀Consistent Locking Mechanism: Comes with a dedicated for easy access and security. Built in sealing part ensures a snug fit, and the included steel tether prevents misplacement during marine activities. ❀Multi Purpose Marine Use: Serves as a protective cap for various fluid containers on boats and recreational vehicles.