Threads are 1/8" pipe and made from billet brass hex stock. Wrench hex is .437".
Nozzle body measures 2.00" overall, from where the nozzle jet screws in to the first thread 1.00", from the tip to the first thread 1.00".
Short nozzle body measures 1.500" overall, from where the nozzle jet screws in to the first thread 1.00", from the tip to the first thread .500".
Racer can choose nozzle body length from drop down menu.