TI-EDC 5 pcs Size S Titanium Keychain Key Ring Split Ring SOLID & LIGHT WEIGHT: Made from high quality TC4 TITANIUM ALLOY, high strength and durable, weight only 0.07oz (1.9g)/pc. HYPOALLERGENIC: Non-toxic, Hypoallergenic, even the people who is susceptible to allergies can use it CORROSION RESISTANT: It is highly resistant to corrosion even in sea water, aqua regia and chlorine. Dimension: Outer Diameter: 0.98"(25mm), Inner Diameter: 0.83"(21mm), Thickness: 0.12"(3mm), Weight: 0.07oz (1.9g)/pc YOU WILL GET: 5 x TI-EDC Titanium Keyring. QUALITY WARRANTY, for any issue, please feel free to contact us, we will get back to your within 12 hours and try our best to make you satisfy.