Body Candy Black Anodized Titanium Steel Midnight Black Butterfly Industrial Barbell 14 Gauge 37mm Gauge size 14 gauge; 1.6 millimeters 1.45 inch; 37 millimeter barbell length Black anodized titanium over 316L stainless steel straight barbell Features black butterfly non-moving centerpiece charm Barbell can be used for industrial, project bar, or helix earring