Boat anchor chain lock made from marinegrade 316 stainless steel with an innovative lock ring that secures the anchor line and protects the chain. Key benefits Corrosionresistant marine grade: 316 stainless steel resists saltwater corrosion for longlasting service on recreational and commercial vessels. Protects the chain: Insulates the chain from direct seabed contact to reduce abrasion and extend chain life. Reliable holding power: The lock ring design firmly grips the anchor line to prevent slippage during rolling seas, changes in load, or when docking. Spacesaving, durable construction: Compact design preserves deck space; polished surfaces reduce wear and make installation and removal smoother. Clear compatibility: Designed specifically for chain sizes 6–8 mm and 10–12 mm. What this product solves Keeps the anchor chain securely positioned so the anchor holds under variable conditions, reducing the risk of unwanted dragging. Minimizes chain wear from contact with rough seabeds, lowering maintenance and replacement costs. Provides dependable performance for routine anchoring, extended stays, or heavyload situations without adding bulky hardware to the deck. Specifications Material: 316 stainless steel (marine grade) Compatible chain sizes: 6–8 mm and 10–12 mm Intended use: Suitable for recreational and commercial vessels, including sailboats, fishing boats, and yachts Function: Lock ring secures anchor line; polished surfaces for smooth handling and reduced abrasion Practical use scenarios Overnight anchoring in a crowded bay: Use the chain lock to keep the rode steady through tidal changes and boat movement, reducing the chance of the anchor dragging at night. Offshore trolling or heavyload anchoring: Maintain consistent chain positioning during prolonged operations, protecting the chain from repeated seabed contact and preventing slippage under variable loads. Docking or short stays in choppy conditions: Add the lock ring when mooring temporarily to help resist rollinduced movement and keep the anchor rode secure while you board or unload. Notes on handling Fits the specified chain sizes; check chain diameter before installing. Polished surfaces reduce abrasion and allow smoother installation and removal of the device. Suitable for both everyday anchoring tasks and more demanding marine operations. This chain lock offers a practical, durable solution to secure and protect your anchor chain without adding unnecessary bulk to the deck, while meeting the demands of recreational and commercial marine use.