This quick link is made of premium steel, which has higher hardness and corrosion resistance than other common materials Quality zinc-plated hardware resists harsh weather for long periods of time and is extremely durable and safe to use Twist clockwise the thread to open and anti-clockwise to close Extremely smooth thread is very convenient for installation and disassembly even if it is closed for a long time Perfect for outdoor activities such carabiner, swing set, shade sails, climbing ladder, hiking, camping, fishing, key chain, backpack, ropes, pets and more