Double inlet sandblasting gun (double inlet nozzle):

Common conventional model comparison table: the diameter of the bell mouth is 32MM and 25MM
Nozzle sleeve thread specification: Standard inch thread 1-1, 4, 11-1, 2 N.P.S.M.    Coarse thread  2,4-1, 2 U.N.C.

  Inner Diameter (ID)             Outer Diameter (OD)        ;          Length
1/4" (6.4mm)       1-5/8" (41.5mm)      130mm
5/16" (7.9mm)      1-5/8" (41.5mm)      140mm
3/8" (9.5mm)      1-5/8" (41.5mm)       170mm
7/17" (11.1mm)    1-5/8" (41.5mm)      200mm
1/2" (12.7mm)    1-5/8" (41.5mm)       225mm