This is the short, high pressure, different colored hose attached to the end of the main high pressure jetting hose. They are purposely a different color from the main hose so that when the operator sees that color hose coming out of the pipe, they know the nozzle is approaching the end of the pipe, and they should shut their machine off.
All leader hoses come with a female end that attaches to the main high pressure hose and a male end that the nozzle attaches to.
