OCEAN tripods are designed & built for professional performance, maintenance-free durability & resistance against seawater, humidity & other aggressive natural environments. Precision-tooled aluminium parts have a corrosion-resistance finishing, while specially redesigned G-Lock leg collars protect each single section of 6X carbon fibre leg tube against s&, dust & mud, & expel any water trapped inside tube sections by working as an air cushion. Even in extreme environments, the GK158