Features: Anti-wear gasketThe anti-wear gasket is stronger, preventing the grinding of the door and window surface when the screw is tightened.Stainless steel main material, strong and durable, thickened material, thick screw.Arbitrary adjustmentLock up immediately and take care of your home. Free control window width, convenient and practical.Fixed at will, open the window size heart.Custom window lock position, arbitrary adjustment. Simple installation: Simple installation, suitable for most doors and Windows.No punching installation, easy and convenient installation, no punching, can be installed at any time.Durable,6061 aluminum lock frame stainless steel, screw with hex key. It can be used repeatedly. Easily apply: Can be easily applied to most environments; By keeping the windows partially open and closed, the burglar-proof and thieves can prevent children from falling and protect the safety of their families while improving air circulation. Specifications:Material:Stainless steel/aluminum alloyColor:SiliverSize(about):60x25x24mm/2.4x1x0.9inch(LxWxH) distance:16mm/0.6inch; thickness:5mm/0.2inch Package Included:4pcs x Sliding Window Security Lock Note:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.