CAMPs Photon Express KS is purpose-built for onsight climbing where every gram and every second counts. The lightweight Photon carabiners are optimized for fast action and smooth clipping. The SphereLock closure is an upgrade to the traditional keylock system with an even cleaner nose profile. The Photon Express KS also uses CAMPs most sophisticated dogbone with variable width webbing that makes them easy to grab while projecting sport routes and the Karstop Evo carabiner retainer on the rope end.