These magnets cannot legally be in toys intended primarily for children under 14. Federal rules also define any small parts that can fit inside a 1.0- to 2.25-inch long, 1.25-inch-diameter tube as ...

Moondrop uses Lenz’s law to slow down the speed of a copper ring down an aluminum tube Moondrop uses Lenz’s law to slow down the speed of a copper ring down an aluminum tube Moondrop uses Lenz ...

This action is mandated by the U.S. Consumer Product Safety Commission (CPSC). The toy contains high-powered magnets that violate federal toy magnet regulations and pose a swallowing hazard.