EASY TO USE: The connector breaks off when you pull up to open. It locks in the open position! They also 't open accidentally and are easier to install than opening a key ring. They are very strong and . Design: When you open the oval key rings, they click and stay open, then snap closed easily. Easy to remove and install. Then when you are ready to close it, just place it between your thumb and index finger, pinch it from both ends, and it snap and lock into the closed position., Manufacturer: Ounfhtrttk