Widely Used: Sliding window locks can be easily applied to most environments, such as patio doors, sliding glass doors, hotel sliding windows, residences, hospitals, schools and offices to give children a safe environment.Durable material: made of stainless steel, the main material is strong and durable, the material is thickened and the screws are thick, equipped with plastic soft rubber pads, anti-scratch, anti-wear finish, easy to open, durable for doors sliding doors and windows.Security performance: Put it on the window or door bar, open and close by the part that needs the window, prevent thieves and children from climbing the window, limit indoor ventilation, improve air circulation. air and protects the safety and theft of family and children.Easy installation No punch installation, installation card, no punch, easy replacement, no other tools required. Each window lock has an internal hex with key and can be tightened by turning the hex key to the right.Precise Design: Scratch, friction and aging resistant silicone rubber pad, high temperature protection window. Fits most plastic and aluminum alloy windows, vertical or horizontal sliding doors.