Measurement: 20GA (0.8mm), 5/16" (8mm) Show your passion for flowers with this unique jewelry , Smooth Surface and easy to use. Great for nose and cartilage. Shipping and Returns We are a U.S. based seller and all of our products are shipped from the United States. You can return any product within 30 days from purchase date. We Care And Will Reply Within 24-48 Hrs!