※ The first image shows a set of two, but only one item is for sale. This is a device to prevent small children from opening doors, installed on the door. It is attached to the door using the strong adhesive tape that comes with the product. No tools are required, and it's easy to install. The fifth image shows an example of its use in my home. ※ The product for sale is unused. I applied 100-yen store masking tape to the door before attaching the product, so no marks were left when I removed it. Safe for rentals. ※ Please prepare masking tape separately. I installed it because the stairs are right outside the room on the second floor. My child is almost 3 years old, and it requires some skill, so they still can't open it. Also good for preventing pets from escaping. ▼ Detailed product description https://amzn.asia/d/09Hal0rI #BabyGoods #BabySupplies