Specification: Color: light gold, Silver, Gun Black (3 Colors Available) Material: premium zinc alloy Product Thickness: 3.5mm - 4.8mm Size: 20 mm/ 0.7in; 25mm/ 0.98in; 27mm/ 1.06in; 33mm/ 1.30in Package Includes: - 24 pcs spring O rings in 4 sizes, each size 6 pieces. High Quality Material, Strong and Durable The round locking carabiner is made of zinc alloy with electroplated surface. It is light in weight but durable, so never worry about your items falling apart. And their high strength and high corrosion resistance make them very popular among most people. Easy to Use The practical spring-loaded automatic door design, so that it can be quickly opened and closed, and securely fixed on a variety of fixed points. Widely Used, Enjoy the Fun of Creation These O rings are perfect for dog leashes, hanging crafts or decorations on handbag purse shoulder strap, webbing, straps, belts, and hand bag strap, harnesses and clothes, luggage belts, backpack and more. To be honest, it is a great tool for organizing small items and let you enjoy the endless fun of DIY. Note: 1. Due to the light and screen difference, the item's actual color may be slightly different from the pictures. 2. Please do not mind that there is some error in manual measurement. And confirm the size before purchase.