Gem Ball Size is 4mm on 16g barbells, 6mm on 14g barbells.
Material: 316L surgical steel
EVERYTHING we sell is brand new, never worn.
Payment: We accept Paypal payments, as well as credit cards over the phone. To make payment via credit card send me your name, item # and phone # via e-mail and we we call you ASAP (almost never on weekends).