What's the difference between single and double ended dreads?

What's the difference between single and double ended dreads?

Double-ended dreadlocks do not have a look on one end. Single-ended dreads do.

Double-ended dreads are quicker to put in.

Single-ended dreads stay in more securely and for much longer.

Single-ended dreads offer a clearer look and look better near the front of the scalp line.