This. is a high-quality doorway pullup bar. It is super stable, will not fall off the door frame. The design allows you to do regular pullups and neutral-grip pullups, and it is sturdy enough to attach rings also. It does not fit the doorways in my new place, so I am selling it. Here is the link to the product to learn more: https://www.pullup-dip.com/products/doorway-pull-up-bar.