I don't know whether the 210 has the J hook wiper arm, but on my 124 when I tried a newer type moulded blade (no metal spanner thingies backing the squeegee edge) it did not seem to latch into the J hook. I drove for a few weeks like that, but was worried it would pop out of the J. Took it back to the McParts store and the guy came out and just REALLY pulled on it an it popped into place in the J hook. He pulled much harder than I dared to.

Rgds,
Chris W.
'95 E300D, 428K

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