Made of Eco-friendly zinc alloy material and plating process. Elegant, strong and practical. No rust concern. Length: 3.62in(92mm); Width:1.18in(30mm); Weight:0.08lb (37g) each. Lock system keeps your stuff safe. Suitable for outdoor activitive, office and school. All products are thoroughly inspected, a great idea for gift Come with gift box, Excellent gift idea.