XUEMEI PREMIUM SAFETY MATERIAL: Baby safety window lock is made of mild steel, which is more secure and flexible. Swing locks can withstand more pressure and are less prone to damage or rust. Child Safety Window Lock: When window clutter is in place, the window can open a limited distance, ideal for families with children. Children will not be able to reach dangerous places and avoid accidental injury. EASY TO INSTALL: Our window latches are a great addition to your home security checklist and are easy to install using clamps. Includes mounting and screws. Baby safety locks can make families safer and parents more free. Wide range of application: Baby safety locks are suitable for most types of doors and windows, such as PVC, wood, aluminum and metal materials, etc. Window vent locks are the perfect item to keep your kids safe. ADJUSTABLE OPENING WIDTH: Our inward window locks are adjustable to 4 different opening widths, so you can adjust to the width you want. Very practical for everyday use. Size: 106*20mm Color: as pictured Quantity shipped: 1 piece