Walmart is recalling 500,000 units of the FitRx SmartBell Quick-Select Adjustable Dumbbells, which were sold nationwide between January and November 2024. The product is at risk of dislodging from its handles, which can cause injury upon impact. The affected products are black with red accents and include handles, weight plates and a plastic storage tray. Consumers should stop using the product and receive a free replacement.