A set of 3 locks, perfect for window safety and crime prevention. Purchased on Rakuten and stored unused. I chose these safety locks because the keys can be removed, allowing for safe ventilation even with small children. I plan to ship them folded slightly to fit in a Rakuraku Mercari box. Purchase price: 2580 yen - Brand: CICADA - Model Name: MADO BLOCK - Quantity: Set of 3 - Features: Window locking function, safety design - Uses: Child safety, locking during ventilation Thank you for looking.