All brushes should have these
NEVER HAVE A WATER PRESSURE ISSUE EVER AGAIN. These pencil jets increase the water pressure out from the brush about 500%! We have been recently installing these on the brushes of all bigger poles due to poor water pressure on jobs. We run 4 pencil jets on each brush and it has increased the rinsing quality and speed. You can take a 1/4 drill bit to any brush and install these in seconds. We put 2 wide and 2 narrow and works wonders.