The outer extension pipe for the T3 / T5 which holds the T3 / T5 engine together.
Note: Be careful when unscrewing this part as debris can be inside the thread and damage it.
The Zodiac Genuine Inner Extension Pipe will suit many cassette style pool cleaners. It is important to note that ribs on the pipe can ware against the compression ring and cause the cleaner to run...
The Zodiac Outer Extension Pipe is what holds the entire cassette together, it screws directly into the main housing of the G2 with the help of the locking collar.