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