Comes with clockwise threaded 59 inch tube and clockwise threaded coupler.
Secure fit on 5-inch tubes with no leak. Coupler parameters: outer diameter 138mm. Inner diameter 130mm (5.12inch). The inner diameter does not take the thread into consideration and is the maximum diameter of a compatible tube.
RIGHTY TIGHTY. Tube measures roughly five (5) inches in diameter and 59 inches when extended.
No need for duct taping. Screw on, screw off.