Phase Lock LoopsFeatures:. Item Type: Sliding Window Lock.. Fits most vertical or horizontal sliding windows & many sliding doors to 254cmApprox 1'-1.57'') track-rim width(Adjustable).. Instantly lock sliding windows and doors - no drilling or tools needed.Place on window or door track & tighten thumb screw; lock shut or allow partial opening .Prevents window from being forced or pried open from outside; easy removal and reusable.Specifications:Material: Zinc AlloyColor: Brown/grey/blackSize: 6 x 4 x 2.4cm/2.36 x 1.57 x 0.94inPackage included:1 x Sliding Window LockNotes:1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!