Sparrow Captive Ring 20g-18g-16g-14g Cartilage Earring-Steel-Nipple Ring-Bird Piercing Jewelry Swallow Bird Captive Ring Available in Various Gauges and Sizes for Custom Fit. Choose Size from Menu Above. THIS IS A CAPTIVE RING-A SPECIALTY TYPE OF BODY JEWELRY. It is not a regular earring!! We provide free instructions for use upon request or there are many online resources to help. Piercing Jewelry-Body Jewellery Bars and Hoops for Women, Men and Teens See our entire collection bird cartilage earrings Sold individually, not in pairs.