I am selling this item because I accidentally purchased the wrong quantity. It is a new, unused item. Here is the product description: Window auxiliary lock using 90% recycled plastic - "Reglock" - "Anyone can easily install it in 3 minutes without tools!" "Deters burglars from entering through windows" "Prevents toddlers from accidentally unlocking and falling out of the window" "Can lock the window partially open" "Robust wedge lock structure despite being plastic" - Guards against toddler falls while ventilating in the hot season! - Guards against pets escaping while ventilating for heatstroke prevention! - You can lock the window open and quickly go to the convenience store! - Even the elderly can easily lock it with one touch without tools! Please refrain from purchasing if you are overly sensitive or seeking a perfect item, as it has been stored at home.