Locking carabiners for indoor and sport rock climbing. The dual pin and auto locking carabiners use a spring mechanism to snap in a clocked position, while the screw gate carabiner locks using threads which must be twisted into a locked position. A lock-type carabiner is particulary useful for climbing applications.
DMM Shadow Locking Carabiner
The Shadow Locking Carabiner is made with an I-beam giving it additional strength. It has significant strength at 24kN. Nevertheless its weight is only one and a half ounces. This feature makes it a strong, yet does not contribute a significantly additional weight to your gear rack. The bent gate on this locking carabiner, along with the notched gate makes it easy to clip in to the belay anchor or finish anchor. It has a versatile design making it easy to adapt to any situation.
DMM Revolver Locking Carabiner
There is a small pulley at the inside top, allowing rope to travel freely. This makes the DMM Revolver valuable for passing rope through an anchor or any other application where the rope must travel through locking carabiners. This is very useful for evacuations or rescue situations when a pulley may be necessary. Use the Revolver in place of the pulley set up and save valuable time.
Petzl William Locking Carabiner
The Petzl William Locking Carabiner has a unique key lock gate. This feature makes both clipping and unclipping easy. With the key lock gate the potential for snagging on runners or other gear is greatly reduced. It has a large opening and large basket, which helps get runners, harness or anchors clipped in and secure. The locking mechanism is easy to operate quickly with one hand. The William locking carabiner is an excellent choice for belay operations.
The locking mechanism creates a secure anchor which is much more difficult to accidentally open. This can happen during belaying and anchoring activities if the climbing rope is twisted or the carabiner is pressed against a rock or other gear. The locking mechanism provides added security. Typically, climbers need 2 or 3 locking carabiners and a belay device for anchoring gear and belays.
The locking carabiner has sleeve that slides or screws over the gate which locks it closed. It has an "auto locking" spring loaded screw sleeve, or a threaded screw gate. The spring sleeve rests in the closed position. The climber must twist the sleeve to open the gate. Twist lock sleeves are easy to use and can be operated with one hand. These are popular for indoor and sport climbing.
Screw gate type locks can also be operated with one hand. When locked, the sleeve screws over the latch preventing the gate from opening unless it is unscrewed. This type is popular with outdoor, canyon and big wall climbing. They considered by most climbers to be the most secure type of locking carabiner. These are slightly larger than the non-locking version which makes it applicable to use for connecting two ropes together, or connecting a rope to a runner. The locking type can be found in all of the same shapes as the snap type: Oval, D-symmetrical and A-symmetrical.
Belaying, rappelling and abseiling are the most common uses for locking carabiners. The largest of the locking types are the most popular as it provides more room for the rope and sling, or two ropes. Plus the additional space gives maneuvering room for fingers.