How do I put a swivel onto the faucet?

You'll need a swivel, optional size converter, and Teflon tape. The best units combine swivel, aerator, and side twist to spray, like a shower head. Note: faucets may have different sizes, a converter looks like a washer with threads inside and out. Note direction: you are usually above the faucet, looking down, so clockwise/counterclockwise orientation for tighten/loosen may appear backwards. Step 1: Remove old end, aerator (looks like a cap with a little screen), or previous swivel that broke and part is still there; carefully clean the threads. Step 2: Use one layer of Teflon tape around the outer threads. Converter first, then swivel. Hand tighten to be very snug, and do not wrench.