High Quality Material: The D-ring shackle lock is made of stainless steel, which is sturdy and durable, rust, corrosion and acid resistant. With special forging treatment on the surface, the heavy duty marine shackle can work normally in indoor and outdoor wet environments. Sturdy Design: The D-shape bow shackle consists of a D-ring and bolts. The chain shackle is a specialty designed to withstand strong resistance in all weather conditions, not easy to damage. The bow anchor has been well polished with no burrs. Easy to use: Make sure the pin is screwed into the hole of the shackle securely, tighten it by hand, then secure it with a wrench or other suitable tool. Make sure the shackle is carrying the load correctly (i.e. along the centerline). Avoid bending loads, unstable loads and overloads. Wide Usage: This stainless steel D-ring shackle lock is widely used for hanging sandbags, mountaineering, hiking, anchor chains, sailing accessories, cabinet. Suitable for connecting flower basket hook screws, heavy screw chains, hooks and other accessories. Package includes: You will get 4 M8 boat shackles. Features: 1. The shackle is made of stainless steel, which is corrosion and rust resistant, can be used in various harsh environments. 2. Anchor shackles are used in lifting operations and static systems. They are movable chain links used to connect various steel cables, chains and ropes. 3. Simple to use, make sure the pin is properly screwed into the hole of the shackle, tighten it by hand, then secure it with a wrench or other suitable tool. 4. Suitable for construction industry, marine, electrical, metallurgy, machinery, railway. Specification: Material: stainless steel Silver color Pack: 4 * M8 Stainless Steel D Shackle Locks