No chip 4 Buttons Modify uncut Flip folding REMOTE FOB key CASE SHELL for FORD Focus Expedition Mustang Fusion Taurus Explorer Sport Trac Five Hundred Escape Escort Thunderbird Crown Victoria LINCOLN Town Car Navigator Mercury Sable Mountaineer Buttons quantity:4 buttons,Pls make sure your key type & buttons is same as picture shows Style:key caseNO interior (remote/electronics/battery/transponder chips) unit inside. The key is uncut and needs be brought to a locksmith or a dealer to be cut to match your car Take the internal electronics (include immobilizer/transponder chip) from original remote and place them to our key shell, then it is OK! There's no programming needed