Internally threaded circular barbell, 8 ga Home » Circular Barbells | Ear Piercing | Internally Threaded Jewelry | Large gauge | Male piercing | Stainless Steel Material: 316L surgical grade stainless steel Gauge (Thickness): 8 (3.2mm)Threading Type: Internally ThreadedType: circular barbellShown: 13mm circular barbell. Retail Price: $11.99Your Price: $ Diameter/ball size: ----- Choose One -----5/8" (16mm) with 1/4" (6mm) ball(s)1/2" (13mm) with 1/4" (6mm) ball(s)1/2" (13mm) with 5/16" (8mm) ball(s)Quantity: