Materials: Our carabiner hook is made of 304 stainless steel. Therefore, it is elegant, strong, light and convenient, do not worry that too heavy carabiner, it is an excellent tool for hikers, campers, photographers, or anyone who carries a bag. The carabiner can be placed directly in the binder or briefcase M5 Quantity: 6pcs. Size: M5 Carabiner, Length: 1.96 “/ 50mm, thickness: 5mm, diameter of the opening diameter of the carabiner: 7mm. Feature: This carabiner stainless steel spring has a spring portal that allows them to be quickly and securely attached to a wide range of fixing points. It works smoothly that the spring portal, it is easy to fix important elements to a pack or belt, etc. Use: These spring closure with carabiner are ideal for many daily applications. Whether as a keychain or to attach objects to a backpack, a luggage, a layer or to hang ropes or cords during camping, fishing, hiking or traveling Size: M5 Materials: Our carabiner hook is made of 304 stainless steel.