Leoben underwater double ball arm is designed for dive light arm mounting system . the dive light arm system needs ball joint clamps and underwater ball arms fixed on the underwater camera tray. the arms differ from sizes and patterns . Sizes of the arm either short or long . the shortest ball arm is 3.3" ,while the longest arm is 16" . all depends on the system you have
Flex Arm 
Camera Float Arm 
Double Ball Arms 
Light YS Mount 
Base Ball Adapter 
