This extra large blowgun nozzle is a need item in the “pits”, and race shop. It allows the user to blow all fuel, oil, and debris out of all lines, hoses, and barrel valves from AN-3 to AN-16. It is made of a type of nylon that is not effected by Nitro, Alcohol, Gasoline, or Oil. It comes with a 1/8 male pipe threaded 7/16 hex end, which installs in most hand operated air guns.