36" Inch Stainless Steel Ball Chain Necklace - 2.4mm - Military Dog Tag Necklace This Ball Chain Necklace is 36" Inches in Length and includes a connector It's made from T304 Stainless Steel It is a #3 size (2.4mm ball diameter) chain Same size as the ball chain used for dog tags This is a polished stainless steel and has a matte finish