Folding Remote Key Case Shell Entry Fob Blade for Audi A4 A6 A8 TT Size: Audi B This is a new high-quality remote case unit. This is for you to replace your worn or broken case. All you need to do is to move the internal components from your old remote to our new case. The keyblade needs to be cut at your local dealer or qualified locksmith. Most locksmiths now provide such services, and charge much less than the dealer.