2. A is used in climbing and caving where rope strains are light to moderate and for decorative purposes. The double figure eight is used to put a loop in the end of a rope, or around an object.

3. Is a popular and easy-to-tie knot used to tie two ropes together for rappelling. It has less bulk than other rappel knots like the double figure-8 fisherman’s knot so it is less likely to get stuck in cracks when you pull your rappel ropes. Never use this knot with ropes of different diameters since at least one fatal accident has occurred when the thinner rope worked out of the knot.

4. Is one of the best knots to use to tie to ropes together for top-roping and rappelling. It’s a very strong knot and, if properly tied, won’t come undone. It’s also a good knot to use if you are tying ropes of unequal diameters together.

5. Is the traditional knot to tie two ropes together for rappelling but has generally fallen out of favor for other knots like the double figure-8 fisherman’s knot. It can be difficult to check visually and is often difficult to untie after being weighted, particularly if the ropes are wet. This knot is best used for tying thin pieces of accessory cord like Spectra together for anchors or slinging nuts like Eccentrics.