The Petzl Spirit Straight Gate Carabiner is one of the most renowned carabiners in modern climbing. The Spirit Carabiners have an "H-shaped" profile that helps to cut the weight of the standard carabiner while increasing the strength. The Spirit Carabiners have an increased contact surface that helps to limit the effect of rope drag on long routes and since they have more contact area, it reduces the wear that occurs to your rope when either: pulling slack on lead, hang dogging a route or catching a fall. The benefits to a straight gate on a carabiner is that the gate helps to direct your rope into and out of the carabiner in addition to featuring the Keylock system and nose shape that helps make clipping and unclipping much easier and snag free.