Stanley 610500 - Bright Brass(3) Window Vent Lock Guard Can Be Used On Double Hung Or Sliding Windows To Provide Ventilation With Key Lock Security Includes Two Strikes So Window Can Be Locked In Either Open Or Closed Position Push To Lock, Key Required To Unlock Furnished "Keyed Alike" For Single Key Operation Of Multiple Guards Can be used on double hung or sliding windows to provide ventilation with key lock security Supplied with two strikes so window can be locked in either open or closed position Push to lock, key required to unlock Furnished "keyed alike" for single key operation of multiple guards Bright brass