Campbell Chain Quick Link is designed to link chains with dual attachment point It comes with the open and closed gate with the threaded sleeve which tightens over a thread to give a strong closed D-shape link It is made of high carbon steel for its qualities like temperature, rust and corrosion resistance It has a galvanized finish and durable Ideally used for caving and climbing for single rope technique, attach to anchor points and can make vital connections Durable and easy to use