Popular on Rakuten! Safety stopper that securely locks windows This product explains in detail how to use it, including how to install the product and how to use masking tape so that you can easily take measures to "prevent falls" and "prevent dropping," and that it leaves no marks in rental properties. ⚠︎Masking tape is not included. Everything in the photos is included. Image 15 Due to shipping costs, it will be shipped without a box. Thank you for viewing.