The Mach Express excels in each of these areas as one of the lightest trades on the market and by far the most functional. The Nano 22 at the gear end fits perfectly on any type of professional, from wires to cam slings to bolt suspensions and pitons. Their low profile takes up less gear space than traditional carabiners and they fish in and out of cracks, chain links, and other tight spaces with ease. Still, they are large enough for normal cutting and the use of clove clutch nodes - two great tests to determine 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