Please note this listing is for 4 PACKS / SETS. All products listed in packs are also available individually, please see our other listings or contact us. Fixes to frame to restrict opening of window with a combination of key locking facility and nylon coated steel cable. Cable can be unlocked and disengaged for ease of window cleaning, or in an emergency and is ideal for installation on windows at height to enhance safety. Supplied with 1 key and 2 fixing screwsAlias ID - bc08017x4