A work bench or other suitable surface will be needed to work on whilst making the hole.
Alternatively a pin tool this can be pushed through the inside to create a hole.
The wire can be wrapped around twice for extra security before cutting off the excess length.
A jump ring can now be added to the loop that has just been created.
The ring can be opened and closed using a pair of pliers in each hand.
An existing chain can be threaded through the jump ring to complete the necklace.