HIGH QUALITY MATERIAL: The round carabiners are made of high quality zinc alloy, which has the advantages of high strength and corrosion resistance, it is very durable and does not suffer any damage for long periods of use. INGENIOUS DESIGN: Round Spring Carabiners the weight is heavier than ordinary conventional products, and the elasticity of the elastic buckle is also very good. the diameter of 28 mm and the thickness of 4 mm. APPEARANCE: Round Spring Carabiners exquisite workmanship and appearance, which keeps the original condition for a long time. Smooth surface and edges make them safe to use without scratching your hands or things. WIDELY APPLICATION: These versatile round carabiners are perfect for everyday use and for hanging your key chains, bags, pendants, crafts, small dog strings, etc. MINI AND CONVENIENCE: Spring clip, quick release. opening and closing are very simple and convenient. It's very convenient to take with you.