Set of 12 includes the following JEM Nozzles:
Plain Round Savoy Nozzles: (NZ1R, NZ2R, NZ3R)
Curved Star Savoy Nozzles: (NZ1J, NZ2J, NZ3J)
Fine Star Savoy Nozzles: (NZ1ES, NZ2ES, NZ3ES)
Open Star Savoy Nozzles: (NZ1M, NZ2M, NZ3M)
Coupler size that is needed for these nozzles are: JEM 2 & 3