Material: Keychain is made of stainless steel, it is lead free and nickel free. Stainless Steel is hypo allergenic, it doesn’t rust, change colour or tarnish. Size: The size of the key is 1.2cm(0.47inch) * 5 cm(1.97inch), which is suitable for wearing keys. TIPS: manual measuring permissible error. Engraved words "People Fly Airplanes Pilots Fly Helicopters". Great gift for a Pilot, military, retired Pilot etc. This cute and pretty keyring charms are perfect for any fly or travel occasion and events. An elegant gift for your loved one. This keychain will come to you nicely presented in the Zuo Bao jewelry velvet bag,which is strictly protected from any damage during transportation.