[Roadkill]

A language check:

Blades: the rubber part?
Arm: the metal part where the rubber is attached?

So far I had thought that the thing you buy at your favourite gas station is called "blade" and that wiper arm is the one that stays fixed to the wiper motor. A bit confused with the vocabulary as English is not my mother tongue.

Anyway, yesterday I tried all adaptor combinations there was with the Bosch unit and was no wiser - the wipers still suck. Guess I have to wait for the sunnier days.