Handle Flex Lock is a very easy to install and use home safety essential that keeps children from opening cabinets. The SecureTech visual indicator guarantees that the device has been correctly locked. Adjustable pins means it fits any kind of cupboards. The lock has a quick release double action and can be used with any type of doors, both with handles or door knobs. Stays on door knobs/handles when open. 2 colors to fit all contemporary interiors.