☆ This is a stopper that holds the door slightly open with a light force. ☆ Uses (examples): ventilation, allowing small pets to come and go, alleviating a feeling of confinement, etc. Also, even if used from the outside, it will detach if the door is opened, so you won't be locked in. ☆ Compatible knobs: Lever handle type (handles/shafts that pass through a hole with a diameter of about 3cm). May not be able to be installed depending on the lever shape and door. ☆ Door opening direction: The parts are symmetrical, so it can be used on either the left or right side. ☆ Opening amount: Approximately 10-12cm (varies depending on the knob shape and how it is installed) ☆ Products: ① Stopper ② Attachment (spare 1) ☆ Color: White ☆ Material: Polypropylene ☆ How to use (a simple installation manual will be included) (Preparation) ① Stick the attachment to the door frame (with adhesive sheet). ② Pass the round hole of the stopper through the lever handle. (When in use) Open the door slightly and hook the square hole of the stopper onto the attachment. To release, pull out the stopper or simply open the door. The claws of the attachment will flex and detach from the attachment. ☆ Handmade product: This was made at home for my interior doors. (Original product) Due to being handmade, there may be variations in shape, rough construction, and scratches. Please purchase only if you understand that this is a handmade product by an individual. ☆ As a bonus, you can also use it as a door card by attaching a message and hanging it outside. ☆ The stopper is sheet-shaped and has some warping. ☆ Parts may fall off depending on the installation method and usage conditions. ☆ It holds the door with a light force and cannot be used on doors that are heavy to open and close or that have dampers. ☆ This is a transaction between individuals, and we cannot guarantee against damage or accidents, so please understand and acknowledge this. ☆ Shipping: Will be shipped via regular mail (non-registered). ☆ I'm tooting my own horn, but I've been using it at home for several months, and my family liked it, so I'm putting it up for sale. Thank you. Door knob, pet door, cat door, children's room, ventilation, alleviation of confinement, claustrophobia