Lamp socket, white porcelain, E27 (or: a large fitting). At the top is (internal) M10 screw thread. You can use that to screw in your strain relief (cord grip). Or to screw in the end of a tube / pipe.
Binnenwerk is (ook) van porselein
|Height of fitting (cm):||5.8 (2.3 inch)|
|Outer Diameter (cm):||4.5 (1.8 inch)|