This is a hand made chain using punched copper links and saw cut titanium links. I use two 20 ton rotary punches to make the punched rings (for copper this is a little over kill, but the tooling is already set up). I wrap and cut the titanium links on site as well.

This 12 gauge chain is 10 1/2” long and 3/8” across. I can easily resize this to fit just about any wrist.