Advantages of quick release keychain: Small size, strong weight capacity, can hold up to 20 lbs. Has a locking button which ensures that the keychain will not be accidentally separated, keeping your keys safe. Usage Scenario: If you have more than one car at home or your family needs to share a car: you can quickly change your car keys with your family without having to remove the car keys from the key ring. If you like fishing: you can use it to quickly connect/disconnect the fishing tools you carry with you. If you like running or exercising: you only need to carry your apartment key to quickly remove unwanted bulky car keys or other things. It's annoying to walk around with a bunch of keys rattling around in your pocket. If you need car repair or valet parking: our keychain connector can separate your car key fob from your house keys for car service and valet parking. If you often forget things when you go out: you don't have to turn off your car, just remove your household keys and you're back in the house. If you don't like a long set of keys hanging from your car's ignition: just use our quick release detachable connector and you won't have this problem, and it's easier to operate your vehicle.