The carabiner clip has an outer size of 55mm x 30mm (l x w) and inner size of 46mm x 20mm (l x w). The thickness of clip is 4.5mm. Made of aluminium material making very lightweight yet extremely strong and durable. This keychain clip comes with a spring-loaded gate that automatically snaps shut and doesnt unlock due to heavy movement or vibrations, providing a secure hold for attaching objects. D-shape design of the hook makes it possible to attach multiple objects to the same hook. The snap gate is wide enough to attach large objects such as water bottle hook, camping rope, etc. These aluminium carabiner clips are a must-have when you go for camping, cycling or to other indoor & outdoor activities such as when you got to the gym, office, etc. Neel Blue 10pcs D-Shape Carabiner Clips Spring Loaded Snap Hook Clasps in Silver