Lzki 4 Button Remote Key Fob Case Shell Pad Replacement for Ford/Lincoln/Mercury 1999 - 2006 This item isn't a remote key and it is just a remote key shell case replacement. Not electronic internals. Best replacement for a key with broken buttons or worn key case. There is NO interior (remote/electronics/transponder chip)unit inside. Just cut the key blade,take the internal electroni(include immobilizer/transponder chip) from original remote and place them to our key shell,then you are ready!