Adapter, with Pg connection thread according to DIN 40430 and metric internal thread according to DIN EN 60423, with hexagon collar. External thread: Pg 11 Internal thread: M 16 External thread length: 7 mm Internal thread length: 11 mm Wrench size: 22 mm With connecting thread sealing ring 987/... (please order separately!) : IP68 Material: Brass, nickel-plated