The Atom 3Lock is a high-strength HMS carabiner designed for belaying and rappelling. The SphereLock nose combines with a large gate opening to make clipping ropes and webbing easy. The automatic lock requires three actions (slide, twist, pull) to open. a High-strength HMS carabiner with automatic lock that requires three actions (slide, twist, and pull) to opena Triple-action makes it safer than standard auto-locking carabinersa Large gate opening and SphereLock nose make clipping ropes and webbing easy