The Apollo MK8 nozzle fits the following 3D printers:

• Wanhao Duplicator 4 series
• Flashforge (newer models)
• FlashForge Creator Pro
• FlashForge Creator X
• FlashForge Dreamer
• Dremel Idea Builder​
• Monoprice Maker Select 3D Printer v2
• PowerSpec 3D Pro​
• PowerSpec 3D X
• Qidi Tech
• ​Wanhao Duplicator 4S
• Wanhao Duplicator 4X
• Wanhao i3
• Cocoon Create 3D Printer

*Do not use too much force when fixing Apollo nozzles; it remains aluminum. As an aid you can print and use this torque wrench for the Olsson Ruby nozzle.

https://www.thingiverse.com/thing:3234943

P3-D constructs and manufactures the nozzle opening with the greatest precision. The Duraplat3-d ™ coating ensures minimal resistance so that the pressure differences in the nozzle are reduced to a minimum. This results in a constant extrusion and thus a particularly beautiful 3D print. The Duraplat3-d ™ coating reduces oozing and stringing.

All this makes P3-D nozzles the top products among the 3D printer nozzles.