Counter-clockwise threaded coupler connects to a COUNTER-CLOCKWISE threaded hoses. PLEASE measure your tube diameter and consider if http://www.amazon.com/dp/B06W2N9CWW is more suitable.
Secure fit on 5-inch tubes with no leak. 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.
LEFTY TIGHTY. Tube should measure roughly five (5) inches in diameter. MEASURE YOUR TUBE BEFORE PURCHASE.
This is an intulon brand product and has not been licensed to be sold by anyone else. Buying from any seller other than Intulon LLC or Amazon.com will only get you a fake product.
NOT designed for clothes dryers.