Silca HU66AT case only

Empty transponder case only (no chip). Used on Audi, Volkswagen, Seat, Skoda etc
SIL-HU66AT

Silca HU66CT case only (horseshoe)

Empty transponder case only (no chip). Used on Volkswagen, Ford etc.
SIL-HU66CT

Silca SK22RT case only

Empty transponder case only (no chip). Used on Skoda.
SIL-SK22RT