Straight Barbell, 6 Ga Home » 316L Stainless Steel | Ear piercing | Male piercing | Straight Barbells | Tongue piercing Material: 316L surgical grade stainless steel Gauge (Thickness): 6 (4.0mm)Ball size: 5/16" (8mm)Type: straight barbellShown: 14mm barbell. Retail Price: $9.71Your Price: $ Length: ----- Choose One -----1/2" (13mm)5/8" (16mm)3/4" (19mm)Quantity: