Large versatile D-shaped light alloy carabiner with twist lock gate,designed for anchors and rigging. The directional shape keeps the load along the major axis maximizing strength. The lock marking provides a visual warning when the carabiner is unlocked. Large gate opening and keylock nose make clipping ropes and webbing easy. Each carabiner is individually tested for a strength of 10 kN and has an unique series number for better traceability and inspection.