Leak Free: use seamless steel pipe and special sealant to prevent metal joint from loosening and leaking, longer working life and save money. Fit for M22-14mm thread connector pressure washer hose. Don’t fit garden hose or water hose. Reinforced Metal Parts: Full metal internal parts is much thicker and heavier than general washer gun on the market, more durable use and stable water output to make cleaning easily. Easy to Operate: 21.2” Extension Pressure Washer Wand provide extra length for gun to get the hard to reach places, help you wash car or clean house easily. Compatibility: Requires pressure washer to have 2.0GPM & Over 1000 PSI Pressure for use. Requires pressure: 70BAR – 1000PSI; Maximun pressure: 275BAR – 4000PSI; Maximum flow: 5.3Gpm.