Marine Grade 316 stainless steel construction provides long service life and strong corrosion resistance in harsh marine conditions. Versatile mounting options allow installation as a standalone unit or inside most anchor rollers, enabling flexible fit on a wide range of boats. Windlass protection reduces wear on the windlass by absorbing the tension of the anchor chain, promoting reliable performance over time. Compatible with multiple chain sizes, specifically 8/10' or 10/12', to cover common boating applications and ensure a secure connection between chain and anchor. Universal design supports easy integration into various boat setups, offering straightforward installation and dependable anchoring stability. Specifications and practical use: Material: Marine Grade 316 Stainless Steel Mounting: Can be mounted alone or inside most anchor rollers Function: Protects windlass by absorbing chain tension Chain compatibility: 8/10' or 10/12' chain sizes Use scenarios: On a mid size sail or motor yacht with limited foredeck space, install the chain stopper inside the anchor roller to maintain a clean deck layout while ensuring secure chain control. For boats with windlasses subject to heavy loads, place the stopper to absorb chain tension before it reaches the windlass, reducing wear and extending windlass life. When operating with different anchor chains on various trips, the stopper accommodate 8/10' and 10/12' chains, simplifying setups and maintaining stable anchoring performance.