Material: Zinc Alloy, UPVC. The wire rope is made of stainless steel, and the lock body is made of high quality Zinc alloy material. Lock and Unlock, Quick and Convenient: The 180mm long Window Restrictor Lock with special restriction design has a safety wire, which can open the window by 11 to 16cm to facilitate the entry of fresh air, and can use the key to unlock the Window Restrictor Lock when it is not needed, then can fully open the window.
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