Consisting of 3 machined parts with threaded ends:
1) The main housing which includes an internal grounding screw;
2) The front is a 1.5" Tri-Clamp with 1" NPS internal threads that recieves the element;
3) The back cover which includes a strain relief connection for the power cord.  

Warning: Electrical wires must be properly connected by a qualified electrician. Use these Element Adapters at your own risk.