Changing your beaded pool liner? Strong and flexible, the Bead Lock is a strong rubbery piece that can help deter your new beaded liner from slipping out of place.  This is a must when you replace a beaded liner because it is fairly inexpensive, and one of the common faults of beaded liners for above ground pools is that they have a greater tendency over time to pop out of the track. Preventing problems that can happen is the mark of a smart pool owner. The Bead Lock is a must-have when changing a beaded pool liner! More secure fit Extended wedge strip Can be used for above ground or in ground Swim without worry, liner won't slip out of track Durable, pliable plastic Slides into place Can be used during or after liner installation Can be removed and reinstalled