The neodymium magnet is encased within a steel cup to ensure proper long-term durability. Dust dirt and road grime are also mitigated through a black epoxy coating that provides increased protection. This powerful yet compact neodymium magnet is perhaps the easiest way to mount your Cyclones to anywhere that has a steel frame-cage or body. As a sturdy mount for rock lights interior lights or anywhere else these magnets hold strong while being bashed in the whoops or hammered in the rocks.