This is a new Spraying Systems Nozzle holder. The nozzle end will hold a nozzle that is 0.494" diameter and has a 5.94" diameter lip on it, see pictures for a picture of a nozzle that fits this assembly but is not included in this listing. The other end will compression seal on a 1/2" O.D. round tube. This assembly has a little more than a 90 degree angle, I would say it is 112.5 degrees the best I can tell.
