Wide Application: Small carabiners are suitable for everyday use. Heavy-duty carabiners are suitable for chain connectors, backpacks, swings, pet leashes, shade sails, fitness equipment, or hanging chandeliers. Quick link chains can also be used for outdoor activities such as camping, fishing, hiking, traveling, and other occasions. Screw Carabiners: Keychain clips feature screws. You can turn on and lock the carabiners by turning the screw, which is designed to create a temporary secure connection. Heavy Duty Carabiners: The carabiners are made of 304 stainless steel, high hardness, durability, wear resistance, corrosion resistance and not easy to deform. It will not rust when used in humid environments or fresh water. Convenient to Use: The stainless steel D-ring has threaded ends and hex nuts, providing a tight and secure connection. Turn the thread clockwise to open and counterclockwise to close. The surface is smooth and has no burrs, making installation and disassembly very