SewellSilverback Speaker Wire with Silverback Banana plugs, 15 ft.

Can I cut one banana plug end to use bare wire with standard "clamp" terminal on stereo, even though the speakers I have are binding post connector?

it is one cable or it is a pair?

Can I use these speaker wires which are 12 gauge from a wall plate to my receiver if my in wall wire is 14 guage?

These are sold as a 2-pack for around the same price on Sewell's own website. Are there two cables (2 sets of red/black) for two speakers?