Stainless steel with female NPT thread, standard round aperture shown. Nozzle can be opened up larger with some decrease in jet coherency, $10 drilling charge, or do it yourself from the inside-out and minimum deburring.

Part Numbers :

• 3/8" : CG-RTN-38F-125
• 1/2" : CG-RTN-12F-187
• 3/4" : CG-RTN-34F-250