Extension according to former DIN 46320, with Pg connection thread and Pg internal thread according to DIN 40430. External thread: Pg 11 Internal thread: Pg 13.5 External thread length: 6 mm Internal thread length: 10.5 mm Outside Ø: 22 mm with connection thread sealing ring 987/...(please order separately!): IP68 Material: brass, nickel-plated