From the manufacturer

The Atom 2Lock 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 two actions (twist and pull) to open.

Features

• High-strength HMS carabiner with automatic lock that requires two actions (twist and pull) to open

• Double-action twist lock sleeve is easy to engage with one hand

• Large gate opening and SphereLock nose make clipping ropes and webbing easy

Specifications

• Material:  Aluminum Alloy
• Gate Type; Auto locking
• Major Axis Strength: 26kN 
• Minor Axis Strength: 11kN
• Open Gate Strength: 8kN
• Gate Clearance: 24mm
• Length: 120mm
• Width: 78mm
• Reported Weight: 88g