The Carlisle Brass Victorian Locking Wedge Plate Window Fastener is the most traditional & commonly used style of fastener for timber windows. Generally this fastener is not suitable for modern weather sealed windows, which have a 3 to 4mm gap when closed. It is available in the traditional mortice or hook plate design. Satin Chrome Fastener Made from solid brass this window fastener has a satin chrome finish for the more modern interior. Each fastener comes complete with matching finish fixing screws.