This is a hand made titanium chain. I hand fabricate all the rings, using grade 1 titanium wire for the saw cut rings and grade 5 for the punched rings. I use 2, 20 ton, rotary punches to make the punched rings. 

This chain is 9" long and 3/8" across. It comes with a 25mm titanium clip. I am happy to resize this chain if needed.