PiercingJ 8pcs 16G 1/4" Stainless Steel Polished Ball Barbell helix Cartilage Tragus Ear Lobe Stud Earring You will receive 8pcs(4 pairs) Stud Earrings Material: Stainless Steel ( one ball is polished, the other ball is abrasive) Ball size: 3MM, 4MM, 5MM, 6MM. Wearable Bar Length: 6MM Gauge:16G (1.2MM)