Jack, there is a small 'stud' with a nut on the rear that attaches the chrome to the car. It can be undone from the trunk. The chrome will then slid backwards and you can detach it from the car (after unsnapping it from the clips). The clip near the rear door is made so the chrome can slip over it. The rest of the clips are made so the chrome will pop over them. I just ordered all new hardware for my 230S - the clips, plastic pads that go under them, the stud, nut, washer, etc. were available from MB - EXCEPT the one that goes by the rear doors. It is NLA. If yours are in good shape, either leave them on the car or put them in a safe place. Good luck.

Tom