Housing to change the electronics from your old dish to the new remote control unit from BMW. The best way to renew your key without spending hardly any money. Easy and simple??, remove electronic key old and put in the new (later there will be that burn the sprat)
The difference between the housing of the wrench Type 1 and Type 2 is the sprat, one has small notches and the other not. Look at the photos to see compatibility.