The Zodiac 11mm Screw gate is super strong and light I Beam* constructed Offset D, its excellent for rigging and for those moments when a locker gives you the security and piece of mind you require. The Zodiac range utilises I Beam technology a process where our designers have optimised the aluminium needed to create light but incredibly strong carabiners. Biners in this range are also anodised for protection against the elements especially coastal and rigorous mountain environments. It is also available in Quicklock and Locksafe gate options and a super strong 12mm.