Finally, attach it to a lobster clasp with a jump ring.
Iron Folding Crimp Ends, Fold Over Crimp Cord Ends, SilverSize: about 6mm long, 3mm wide, 2. Iron Folding Crimp Ends.●Usage: It provides a handy way to attach clasps to leather or fabric jewelry cords by grasping the cord so that it will not slip.● Easy to Use: Lay the ends of the cords in the folding crimp ends; use a plier to press down the sides at a time to fix the cord tightly on the metal crimp end caps.