Aluminium deck filler for water and diesel. Cap is attached by a chain and has a build in pull up key to open.   3 Fixing Holes for easy mounting  Overall Diameter - 84mm  Cutout - 50mm  Hose Diameter - 38mm • ISO 11192• Aluminium• With delrin cap• Hose connector Water filler has blue cap. Diesel Filler has red cap.