Thank you for viewing. This is a round, circular carabiner. It's a stylish round key ring/carabiner that can be used to attach small items and charms to your bag, hold car smart keys and house keys as a key holder, or hook up small items like pass cases, smartphone cases, and coin cases. Also great for handmade projects! This set of 20 pieces is perfect for various situations. This is a special, limited-edition set, only one available. Black round carabiners, zinc alloy, inner diameter 32mm, set of 20. - Color: Black - Diameter: Approximately 40mm - Inner Diameter: Approximately 32mm - Set Quantity: 20 pieces *Please understand that these are made overseas. There may be small scratches, dirt, or imperfections in the construction. Measurements are approximate due to manual measurement. The actual color may differ from what you see on your monitor or screen due to brightness and other factors.