Two-piece connecting links (aka couplers and also known as couplers or hammerlocks) are a very common rigging component. They are used extensively in building chain slings, often used to connect the chain legs to the top master link. They can also be used to connect other rigging components together, such as hooking shackles to chain slings, or connecting eye bolts to round rings. Cartec produces these couplers in Italy from high-quality Grade 100 steel. They are heat-treated and load-rated, ready for use in overhead lifting or load securement applications.