What nozzle does my printer use?
This is a very common question.
80% of hobby 3D printers use a V6 nozzle.
However this article should help you with looking for the right one.
V6/V5 nozzles
If you can see your hot end in one of these pictures below, this is the right section.
Click on one of these nozzle types to learn more.
Each picture leads to a separate article about the nozzle type.