What are common types of friction hitches used in rappelling?

The correct answer identifies the common types of friction hitches that are specifically utilized in rappelling situations. Friction hitches are useful because they can grip the rope under load while allowing for some adjustability when not under load. The three mentioned hitches—Auto block, 3-wrap Prusik, and Klemheist—are all designed to provide reliable friction and are frequently employed in rappelling scenarios.

The Auto block is a hitch that can slide up the rope when under minimal tension and locks when weight is applied, making it effective for rappelling and safety backup systems. The 3-wrap Prusik is a well-known hitch that wraps around the rope three times to create friction, which allows it to hold securely under load. The Klemheist is another friction hitch that is easy to tie and works well in situations where the rope does not slide through the hitch.

Other options include knots and hitches that have different primary uses. For example, the Bowline and Figure 8 knots are essential for creating secure loops but do not provide the same adjustable friction capabilities required for rappelling. Clove hitches and Double fisherman's knots are primarily used for tying two sections of rope together rather than serving as friction hitches in rapp