Probably- as long your current blades are approximately those lengths. (they might differ by a quarter inch or so due to metric/imperial conversion) My Mk4 uses these 'hook' type arms ,so the mk1 probably does.
If you scroll through the photos on the advert one of them shows you how to fit them. These are probably the easiest type to fit. The old blade slides off the hook. You will probably see that where the wiper arm joins the wiper blade it curves back on itself in a hook shape. The blade hinge assembly nestles inside this hook curve, Grasp the blade assembly at this point and try to push it so it slides out of the hook. It probably wont have the lift- up overclip like the one in the photos. Different brands have slightly different designs.Try to slide it out just by pushing it firmly, but if it doesnt move dont use excessive force or you might break something. Look more closely. There may be a lug or lugs that you need to press in to release it. My Mk4 original blades have a small lug underneath . You could have a trial run before buying by removing then replacing an existing blade. If you cant do it revert to plan B, free fitting.
This type of aero blade are an improvement on the older/cheaper style of blade which you may currently have fitted ,and can still buy. (these have exposed metal lugs gripping the rubber part in several places ) Bosch is a good brand although I think they are now made in China.
