This adapter quickly threads on and gets you ready to start improving your filtration in minutes. It screws on to the return/inlet fitting of Intex, Bestway and Coleman, soft sided pools and will provide a fast and easy connection for your Aquabag. Your inlet may have a cover. Simply remove the cover on the inside of the pool (may have a lock screw), and install this fitting (turning clockwise, lightly hand tight). This adapter will not work on Hot Tubs or other pool brands.