A zinc plated large sized offset D made from 12mm bar. This carabiners wide gate opening & excellent wear resistance makes it particularly suitable for clipping onto steel safety lines or attachment points. It is also of use in any situation where a large internal volume is required. Please note that the screwgate Kletterstieg is not suitable for Via Ferrata. Klettersteig steel locking biner 12mm bar Wide gate opening & large internal volume Strong & durable Zinc plated for corrosion protection