This child safety lock is made of plastic and stainless steel, which is rust-proof, wear-resistant, and durable. Each lock comes with two keys. The length of this door stopper is 25.7cm/10.1in, suitable for most doors and windows. The length cannot be adjusted. The window opening distance is largest when installed horizontally and smallest when installed staggered. This refrigerator lock can prevent children from opening the refrigerator door or cabinet door, spilling the contents, or getting hurt. It can provide protection for children. This fridge door stopper has a self-adhesive design, is easy to use, and has strong adhesion. Just remove the protective film after confirming the position and stick it directly; no need to drill holes and damage furniture. The child window protector is suitable for refrigerators, cabinets, doors, windows, drawers, and can be stuck to all smooth, dry, and clean surfaces, such as tiles, glass surfaces, and metal surfaces. Please