Finally, attach it to a lobster clasp with a jump ring.
Brass Folding Crimp Ends, Fold Over Crimp Cord Ends, Light GoldSize: about 3~3.● 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 ends tightly on the metal crimp end caps.5mm wide, 8mm long, hole: 1mm, inner diameter: 3mm. Brass Folding Crimp Ends.