Design and Details For sport climbing at the highest level Equipped with a Photon straight gate carabiner on the bolt end and a Dyon KeyWire carabiner on the rope end Photon is our lightest solid gate carabiner featuring our proprietary SphereLock closure for easy cleaning Dyon features our patented KeyWire design that combines the benefits of wire gate action with the proprietary SphereLock closure Curved I-Beam construction on the spine of the Dyon creates a very high open gate strength Variable width polyester dogbones are easy to grab while projecting sport routes Features the proprietary Karstop Evo carabiner retainer on the rope end