I have two pressure washers, one nilfisk 110 bar, and it works normally on this one; it doesn't fit perfectly, I put some insulating tape and it just drips at the joint. The second one is total; this gun has nothing to envy from any other. Simply, for those that don't fit, there are converters for 1-3€. The plastic quality is very good, and the water flow is strong; converters are available in tool stores.