Handle Flex Lock is 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 mean it fits any kind of cupboard. The lock has a quick release double action and can be used with any type of doors, both with handles or doorknobs. Stays on doorknobs/handles when open. 2 colors to fit all contemporary interiors.