Features: Made of aluminium alloy material, sturdy and safe. It is strong,solid and sturdy, beautiful workmanship, aluminum alloy frame that can be reused many times. There is no need to set up extra tools,it equips a hex key in each window locks, keeping at the music through key control. Can be smoothly utilized to most environments. By retaining the home windows in part open and closed, the burglar-proof and thieves can forestall adolescents from falling and preserve the safety in their households while recovering air circulation. Specification: Material: Aluminium Alloy/Stainless Steel Size: As the photographs shown Color: Black, Silver Note: There would be some slight variations within the colour tone of the images and the particular item. Please enable 1-2mm differs because of handbook measurement, thanks. Package Included: 1Pc x Window Lock Packing Safely in Bubble Bag.