Junipurr's threaded 16g curved barbells are made with verified implant-grade ASTM F-136 Titanium (6AL-4V-ELI) that has been APP verified.These barbells are designed and guaranteed for use with Junipurr Jewelry but have been found to fit many popular APP-verified brands.Note: cross matching brands is not encouraged or guaranteed to fit and is therefore excluded in the warranty. Frequently Asked Questions What material is your titanium made of and where? Junipurr's titanium is made of APP-verified, ASTM F136 implant grade Ti and is DFARS compliant. It is manufactured in Europe and conforms to ISO 9001(2015). Is your titanium APP approved? Yes. We are a proud corporate sponsor. Can your titanium be anodized? Yes. Absolutely. What is your return policy on your titanium? Similar to our gold, we offer a lifetime warranty on our titanium products. Are your titanium ends hand-polished? Yes. How do you clean it before it arrives at my studio? All titanium is ultrasonically cleaned and steamed before packaging.