Offer safety to children or pets: Window restrictor hooks are designed to limit the opening of a window to 100mm, helping prevent children or pets from falling or running out, ensuring their safety. Easy installation: Just need a screwdriver to fix the restrictor locks to the window; complete the installation with included screws and operation manual. Durable 304 stainless steel: These window restrictors offer great corrosion resistance, high toughness, and rust protection, extending service life. Reasonable design: Can be released to allow full opening of the window; automatically re-engages restricted position when the window is closed, convenient for everyday use. 4 pcs right-handed + 4 pcs left-handed: Pack includes 4 right-handed and 4 left-handed restrictors for versatile installation; ideal for home, kindergarten, school, and other safety applications. Name: Window Restrictor Locks Quantity: 8 Pack Color: Silver Material: Stainless steel Package contents: 4 x Right-handed window restrictor locks 4 x Left-handed window restrictor locks 32 x Screws 8 x Safety fixing pins Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.