Straight Barbell Titanium Straight barbell made of ASTM F136 surgical implant-grade titanium, suitable for human implant. Designed for use in body piercing. 1.6 mm = 14G Straight barbell Attachments screw in to post. Non-Sterile Internally threaded Fits basic internally threaded attachments for 1.6mm = 14G barbells (non USA)