These barbells are made from implant grade titanium and can be used with a variety of threadless ends.
 
The 18ga barbell has an attached 2.5mm ball. The 16ga barbell has an attached 3mm ball.
Dimensions:
12ga - Head Diameter: 4.6mm, Shaft Diameter: 2.1mm
14ga - Head Diameter: 3.8mm, Shaft Diameter: 1.6mm
16ga - Head Diameter: 3.05mm, Shaft Diameter: 1.29mm
18ga - Head Diameter: 2.29mm, Shaft Diameter: 1.04mm
 
LIMITLESS COMBINATIONS, posts also fit gem ends.
All Titanium pieces can be anodized into a wide variety of colors.