The Brinks Commercial light duty keyed entry lever is designed for entry doors or doorways where added security is needed. Pushing and turning the inside button locks outside lever requiring use of key until the button is manually unlocked. Turning the inside button locks outside lever until unlocked with a key or inside lever is turned. A 5-Pin SC1 cylinder and brass plug to provide added security and peace of mind. Equipped with tubular chassis for easier installation, the keyed entry lever will fit wood or metal doors 1-3/8" to 2" thick.