This part is a Complete New Style Gray Adjustable 2-5/8" Face Width Mini Jet Directional 5 Scallop Internal made by Waterway. 

This Jet snaps into a Waterway New Style Cage Back Nozzle.

These jet internals are removed by prying the Jet face out gently with a flat screw driver..

If you want to remove the nozzle you use the jet face partially placed into the hole to grab the nozzle and unscrew the nozzle turning left out..

To install a new nozzle place the nozzle on the fingers or hexagon hole of the face screw it in to the right until it stops not overtighening it and the turn back slightly left and snap in face .

I have the nozzle for this jet below and it is the new style..

If your old jet does not have the hexagon shaped white cage in between the 4 prongs you have the old style..

You can switch to this style but only if you order the new style nozzle to go along with the new jet..

Note: There are two styles of the nozzle and also two sizes of each style...