Operational with one hand and sensitive to our gram-counting ways, the Petzl Rocha Screw Lock Carabiner is a staple in our rack. The pear-shaped design offers a large rope-bearing surface, which comes in handy when rigging belay stations, while the gate's red visual indicator makes it clear that the gate has not yet been locked. Built with an aluminum, H-frame construction, this 'biner keeps gram count low without sacrificing size or strength.