This is a standard nozzle with a 3mm (0.12") orifice, used on a Mazak Mark II, NTX, STX, and all early Mazak Models. This is the Wide version of the nozzle.
Chrome Plated nozzles are harder and last longer than the copper nozzles.
Double nozzle version available -
Chrome Plated / Double version available here
Mazak® Part # 46603350530 /CP