[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 easily (comes with 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 the restricted position when the window is closed, convenient for everyday use. [4PCS Right Handed + 4PCS Left Handed] Pack includes 4 right-handed and 4 left-handed restrictors for added convenience. 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 Only the above package content is included; other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement allowed error is +/- 1-3cm.