This very simple swivel connection will make it easier to use your water fed brushes. Have complete control of the brush on the pole. People wanting to make these swivels you don’t need anything special. Is all basic mechanics’ most people will be able to make these. Using tools you already have. Also not limited to just water fed brushes. Can have on other tools that other wise use or need a swivel action that is more direct easier to use. No flopping around hard to control swivels. Here is a swivel on water fed applicator. Making it easier to use move it any way you want.