EU DIN or Double DIN Radio Removal Stereo Keys key tools set will work for following brands Audi, VW, Ford, Mercedes, Porsche 1-Audi 1996 and up, Works for RNS, Navi Plus , Concert, Chorus & Symphony Units 2-Beta , Gamma, And Delta Units Some Models may require 2 keys THIS IS FOR A SET OF TWO KEYS 3-Ford Focus 2005 & UP 4-VW 1996 and up 5-Mercedes 1992 and up 6-Porsche MOST MODELS, any CR or CDR radio in a Boxster or 911.