The Mach Express excels in each of these areas as one of the lightest trad draws on the market and by far the most functional. The Nano 22 on the gear end situates perfectly on any kind of pro from wires to cam slings to bolt hangers and pitons. Their low profile takes up less space on gear loops than traditional carabiners and they fish in and out of cracks, chain links and other tight spaces with ease. Yet they are still big enough for normal clipping and the use of clove hitch knots - two great tests for determining when a carabiner is just too small. The Photon Wire is the lightest full-size carabiner on the market making it the optimal choice for the rope end.