One (1) custom length of pure copper 2.4mm ball chain and one (1) end connector. The chain and connector are solid copper and are not lacquered.
If needed, you can easily cut the chain shorter using household scissors, kitchen shears or cutting pliers.
To open the chain, squeeze the chain together on either side of the connector until one end pops out. To close the chain, insert the last ball into the connector, then push down on the ball while straightening the chain until the ball pops back in.