The Grivel Tau wire lock features two gates, one key lock and one wire that open in the same direction. Grivel describes it as, “The Tau is a modern carabineer with the new innovative wire-lock system.
“It is ergonomic shape makes it easy to handle and operate. Bomb proof wire-lock patented system. The strength is given by the solid gate and the wire keeps the gate in the closed position.” When closed, the wire gate holds the keylock gate in place to make a simple and easy to use auto locker.
This was one of the best carabiners new to the market this year because it will allow climbers to cut weight from their rack without jeopardizing safety. Another top design from Grivel that rings in at $15, more here.