These are made of brass with and are available with either a nickel or brass plating.
These are double tube beads, with center holes that are about 5/32″ in diameter.
These measure about 1/2″ long by 1/2″ wide
Item code Dec875
Brass Double Barrel Beads  $10 per pack of 50, USA postage included
Nickel Double Barrel Beads  $10 per pack of 50, USA postage included