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2. Rock-climbing equipment - Wikipedia

   en.wikipedia.org/wiki/Rock-climbing_equipment

   Sport/competition climbing quickdraw with a "bent gate" at one end for easier clipping-in . Quickdraws are used by climbers to connect ropes to fixed points such as bolted anchors in sport climbing, or protection devices in traditional climbing. The quickdraw consists of two non-locking carabiners connected by a short, pre-sewn loop of webbing.

3. Belay device - Wikipedia

   en.wikipedia.org/wiki/Belay_device

   This locking carabiner is clipped to the belayer who is then able to lock the rope at will. Some plates had two slots for double ropes. The slots could also be different sizes for different diameter ropes e.g. 9 mm and 11 mm. A wide wire spring may be attached on one side to help keep the plate away from the brake carabiner to ease feeding and ...

4. Figure 8 (climbing) - Wikipedia

   en.wikipedia.org/wiki/Figure_8_(climbing)

   This device utilizes a large surface area in contact with a climbing rope to provide sufficient friction along with the proper technique to be used as a belay device or for rappelling. A figure 8 (sometimes just referred to as an 8) is used in conjunction with a climbing harness and locking carabiner to control a belayed climber's descent, or ...

5. Grigri - Wikipedia

   en.wikipedia.org/wiki/Grigri

   While the Grigri was designed as a belay device, some big wall climbers (such as those climbing Yosemite's Half Dome or El Capitan) have invented novel ways to extend its use and compromise its safety. For example, some big wall rope soloists use the Grigri (sometimes slightly modified) as a self-feeding hands-free self-belay device.

6. Munter hitch - Wikipedia

   en.wikipedia.org/wiki/Munter_hitch

   The friction of the rope against the screw on the carabiner can cause the screw to undo and the carabiner to open, potentially weakening the strength of the carabiner, or allowing the rope to escape the carabiner completely. Therefore the hitch has to be tied correctly with the braking end on the opposite side of the carabiner than the gate is.

7. Self-locking device - Wikipedia

   en.wikipedia.org/wiki/Self-locking_device

   Self-locking devices are pieces of rock-climbing equipment intended to arrest the fall of solo climbers who climb without partners. This device is used for rope solo climbing, for "ground-up climbing", and for "top rope solo climbing". To date, several types of self-locking devices have evolved.