These Tungsten Carbide lined blast nozzles are for hoses with a 1/2” inner diameter (ID). A hose with a 1/2” ID requires a 1/2” entry nozzle paired with a nozzle holder to accommodate a 1 3/16” outer diameter (OD) hose.
When choosing a nozzle, it is important to pair the blast hose ID with the entry of the nozzle. This pair must be exact or within 1/4” for best results.