Attention: Not suitable for garden hoses or hosepipes. The pressure washer gun core and foam lance core are made of heavy duty brass. The gun is M22-14 threaded inlet fitting. Adjustable foam lance with 1/4" quick connect. Requires a pressure washer over 1500 PSI to use, max pressure: 4350 psi. 140 degree F max. Capacity: 1L. Humanized Design: Heavy duty brass neck with O-ring to prevent leakage. The high pressure foam cannon can be adjusted to your specific needs. The top button controls the amount of water and the thickness of the foam, and the foam gun produces the thick foam. Adjustable rotating front nozzle to change the jet: water column and fan. High pressure washer gun: M22-14 threaded inlet connection (inner diameter 14mm), suitable for 14mm diameter pressure washer hose connections. And the 6.35mm quick-fit outlet, the outlet is small but suitable. The gun has a lockable safety handle to prevent accidental jets. Simple to assemble, disassemble the nozzle and washer gun. Easy