The Klemheist Knot is a directional friction hitch primarily used in climbing, rescue, and arborist operations. It grips firmly in one direction while sliding easily in the opposite, making it ideal for ascending or descending ropes. It can be tied with cord or webbing, offering flexibility. Unlike the Prusik, it slides upward more smoothly, making it preferred for upward mobility.

Also Known As

• French Machard Knot
• Kleimheist (common misspelling)

Advantages

Superior upward mobility compared to the Prusik, works with cord or webbing, and grips reliably in one direction.

Disadvantages

Generates heat under heavy loads, which can degrade the cord. Avoid prolonged high-friction use.