The Multi Coil features two round coils per string. This version comes in an MM-style cover.
W-Bucker, Soapbar and MM Pickups can be used SINGLE in the bridge position with great results! You could also use them in the neck position only, of course. They can all be ordered separately. Used as a SET, they offer unlimited sound variety!
The W-Buckers can be wired as Split-Coil. They always come with four wires plus ground wire. So you can have various wirings by push pull pot or mini switch.
Possible is Humbucker / Single Coil and seriell-parallel wiring.
Humbucker means both coils are working, you can hotwire one coil by push pull pot, the pickup then works in Split-Coil-Mode as a single coil, which means a slightly thinner tone but more highs and brilliance. So you can get a 7ender type tone from the humbucker.