Equipped with a straight gate keylocking Photon carabiner for bolts and a Photon Wire carabiner for pure clipping bliss on the sharp end 16 mm polyester dogbone features the Karstop Evo carabiner retainer on the rope end A prime combination of two carabiners that have been perfectly optimized for their specific function. The Photon straight gate is the lightest keylocking carabiner in the world. The Photon Wire is the best clipping carabiner in the world with its finely contoured, perfectly tensioned gate and massive gate opening. The Photon carabiners have an optimized body design that increases rigidity and strength without increasing weight. The patented SphereLock closure is an upgrade to the traditional keylock system that minimizes play between the gate and nose for enhanced safety and performance. The updated Photon Wire also features a redesigned interface between the gate and nose to help protect the wire gate from damage or accidental opening. The 16 mm polyester dogbone is thick enough to grab for emergency clips and comes equipped with the Karstop Evo carabiner retainer that prevents the rope end carabiner from shifting.