Keyless2GoNew Uncut Replacement 80 Bit Transponder Ignition Car Key H92 H84 H85

Will it fit my Ford focus 2007? I only have 1 key

Does it work for a 2004 Ford Explorer.

Once bought, do they need to be cut? or you just can program them and use them directly?

I have one original key and one dup which had its transponder programmed from it. both work ok. will these two keys work to program this new key?