It won't fit models with the tip-shift automatic functions, the opening for those models is too wide, I have been unable to find an SLK with the tip-shift function in order to track down the part number, if there even is one!
It's actually of no use at all to me, but I bet there are a lot of other members with w210s or w202/w208 with touch-shift that would really like an oem chrome surround, plus it's only about £4 or something!!