Bent gate version of the Photon designed for the rope end on quickdraws. a The lightest solid gate carabiner in the world a Slim nose profile features our SphereLock closure a Optimized body design increases rigidity and strength without increasing weight Bent gate version of the Photon designed for the rope end on quickdraws. The Photon is the lightest solid gate carabiner on the market. The SphereLock closure is an upgrade to the traditional keylock system with an even cleaner nose profile.