30 Inch Nickel Plated Steel #3 Ball Chain Necklaces, 10 Count 10 ball chains with matching connector included and already attached to each #3 size chain has a bead diameter of 3/32 inch (2.4mm) Nickel Plated Steel has a shiny chrome-like appearance #3 ball chain is the common chain size for dog tag necklaces Made in USA by Ball Chain Manufacturing Since 1938. We are the manufacturer, not a reseller.