Material: This child safety locker is made of plastic and stainless steel, which is rust-proof, wear-resistant, and durable. Each lock comes with two keys, providing convenience in case one is misplaced. Size: The length of this door stopper is 25.7 cm / 10.1 in, suitable for most doors and windows. The length is fixed; maximum window opening is achieved when installed horizontally, while minimum opening occurs when installed staggered. Good Protection: This refrigerator lock helps prevent children from opening refrigerator or cabinet doors unexpectedly, helping to avoid spills or potential injuries. It provides reliable safety for homes with young children. Easy to Install: This fridge door stopper features a self-adhesive design with strong adhesion. Simply remove the protective film after positioning and apply directly to the surface. No drilling required, preventing damage to furniture. Wide Application: This child window protector is suitable for refrigerators, cabinets, doors, windows, drawers, and other smooth, dry, and clean surfaces such as tiles, glass, and metal.