Discover these 12 - piece heavy - duty chain quick links. Each 1/8 in. M3.5 chain link carabiner, with a 3.5mm thickness, can support up to 175 lbs. Crafted from premium carbon steel with a black electrostatic powder coat finish, they are highly durable, abrasion - resistant, and corrosion - proof. The threaded locking design, with threaded ends and hex nuts, allows for a quick and secure connection by simply rotating the screw. These quick links are incredibly versatile. They can be used as chain connectors, for fence gates, swings, pet chains, shade sails, fitness gear, DIY projects, or chandeliers. They're perfect for outdoor adventures like camping, fishing, hiking, and traveling, as well as everyday use as carabiners. With high - quality assurance through multiple tests, they bring convenience and reliability to your various needs.