Injector with injection channels as well as methods for the introduction of channels

The inventionrelates to an injection nozzle(1) for an internal combustion engine, having a nozzlebody (2) and having a plurality of injection channels, each with an inlet opening and an outlet opening each. According to the inventionit is provided that at least two injection channels are formed differently. The inventionfurther relates to a method for introducing at least two differently shaped channels in a workpiece, in particular an injection nozzle(1).