DIN Radio Release Keys to remove the majority of Stereo as fitted in Ford, early Peugeot, Rover, Renault, Vauxhall. If your radio has 1 or 2 holes at each side of the stereo, these are the Keys needed. Some Vauxhall models require you to remove the 4 small studs with a (5/64" or 2mm) Allen Key before you can insert the release keys Sold In One Pair.