These Devoran Black Monkey Tail Window Fasteners from the Devoran range are of the highest quality and will perfectly complement traditional window styles. This traditional window fastener is lockable and comes complete with screws and a key and is available in a left or right hand version.Left and right handed optionsComes with screws and locking mechanism with keyPart of the Devoran range of Antique Window & Door HardwarePlease Note: Not designed for use with weathersealed windows.