It can be used to hang keys for doors, drawers, and trailers. The built-in lock can keep children inside. The key accessory allows you to easily attach your car or house keys to belt loops, wallets, and. Lightweight and small in size, perfect for daily carry. The detachable design allows you to easily separate or divide what you need. Gently press the buckle to easily remove half of the need. It is made of titanium alloy which is corrosion-resistant, rust-resistant, lightweight but durable.