"What can these be used for? The perfect accessory for all kinds of bags: If you have a lot of wallets, backpacks, handbags, and cardholders. This will be a good accessory for a chain. It works great for your bag chain activity. The perfect decoration of various DIY: These small accessories can be used for a variety of DIY decorations. As long as you can think of it, you can use it. A good partner for the keychain: these swivel clasps lanyard snap hooks can hang your key to prevent loss. It is smaller and lighter. It is easy to carry. Good material: It is made of zinc alloy. The properties of the alloy are stable and it is not easy to rust. Great for -Climbing ropes,connected,boating,sailing,camping,fishing,hiking,travelling,weight lifting machine, and various. etc. Easy to use in everyday life. Features: Spring snap hook opens and closes smoothly, allow to quick connect/disconnect of ropes, chains, and straps Carabiners are rustproof and corrosion-resistant, clean, and smooth surface ensures not catch and tear your hammock, shade sail, tent, or backpacking gear. "