Flexible arms made of rugged plastic polycarbonate material for attaching a underwater flash (strobe) or a light to a tray. They are best used with smaller lights and strobes.
Underwater Camera Floods: Avoiding the High Water Mark
No subject scares underwater photographers more than having an expensive housed camera turn into an aquarium. Even a bit of water can turn electronics into a corroded mess.
Here are a few general tips on maintenance that should help you avoid finding Nemo in your housing