Short stainless steel DogTag ball chain ( ball diameter 2.4 mm ).Its lengths is 11.5 cm / 4.5". It is quality ball chain that will never rust or smudge skin. It is completely safe for health. Can be wear by allergic. Chain is made of quality stainless steel. May be use with Dog Tags as short chain of second Tag, key rings. Each chain is equipped with connector to allow clasp. We can fit any length for you if you need - just let us know.