The 40 mm padlock with a 20 mm shackle made of stainless steel K5UD is the epitome of security and resilience. Its stainless steel manufacture makes it virtually immune to corrosion, ideal for the marine environment. Additionally, its 20 mm shackle is perfect for securing hatches, chests, or even small trailers. Among its most useful features is the inclusion of 5 keys, ensuring you'll never be left without access if one gets lost. It's worth noting that security at sea is essential, and this padlock is a smart choice to protect what you value most during your voyages.