Wiper Arms - Mk1 and Mk2 different?

Hi, 

I ordered some refurbished wiper arms off ebay for my Mk2, it said they would fit both the Mk1 and Mk2!

They haven’t arrived yet but I have since noticed mx5 parts list them separately so if they are originally from a Mk1 will they fit?

Cheers 

Should be both the same really.Mk2 may look bit newer/more modern looking but should fit on

Thanks Robert