this is my first time here on StackExchange. I'm pretty new to Blender but I have successfully created some simplistic models so far. So I just modeled a roof rack made for Euro Truck Simulator 2. Since it's made out of cylinders a lot of normals need to be flipped, but doing it one by one could take hours and it's a pain.
The model with the default material:

The model with a chrome-like material, as you can see the normals are off almost everywhere:

Is it possible to flip every normal with a simplier method? Thanks in advance for the answer! :)