Double ended dreadlocks are solely intended to tie into your dreadlocks or hair on a removable and temporary basis. Single ended dreadlocks range from looped ends, to clips, to frayed open ends, and more. With single ended dread extensions that have loops you have the option of tying them in a temporary fashion or you can cut the loops and fray out the ends to install them permanently. Frayed single ended dreadlock extensions are solely intended to be used with a permanent attachment.