Master Link or Gathering Ring : Is a forged or welded steel link used to support all members (legs) of an alloy steel chain sling or wire rope sling. (Spec 2C)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}