(PRE-2017 KARCHER Steam Cleaners & Pressure Washers and most other makes of pressure washers with an M22 male outlet. PRE-2017 KARCHER MODELS). 2017 KARCHER 5/16" Trapezoidal T22 Thread. ICE Limited - a Specialist KARCHER & Numatic Sales, Service & Spares Dealer since 1987.
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