[Offer Safety to Children or Pets] Window Restrictor Hooks are designed to limit the opening of a window to 100mm, preventing children or pets from falling or escaping, ensuring their safety. [Easy Installation] Just need a screwdriver to fix the restrictor locks to the window; installation is quick and simple (includes screws and an operation manual). [Durable Stainless Steel] These window restrictors are made from high-quality material with great corrosion resistance, high toughness, and rust protection, extending their service life. [Reasonable Design] The restrictor can be released to allow for full opening of the window. It automatically re-engages the restricted position upon closing the window, making it convenient for users. [4PCS Right Handed + 4PCS Left Handed] The pack includes 4PCS right-handed and 4PCS left-handed items for added convenience. Perfect for home, kindergarten, school safety, and more. Name: Window Restrictor Locks Quantity: 8 Pack Colour: Silver Material: Stainless Steel Package Contents: 4 x Right Handed Window Restrictors Locks 4 x Left Handed Window Restrictors Locks 32 x Screws 8 x Safety Fixing Pin Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the actual product. The measurement allowed error is +/- 1-3cm.