I bought two of these so that I could run a coaxial cable through the wall for my subwoofer using screw on f-connectors, these adapters and RCA keystone jacks the cable is completely hidden and works perfectly. The Source was going to charge be $8 per converter. Monoprice was less than $2 for two.
Shipping was pretty fast also. Only took about a week and a half to Canada.
To me is much easier to put an F connector on a coax cable than to put one of this, so this adapter are great, I can cut and finish a coax using my current tools and high quality connectors, and convert that cable in whatever I want using the adapters, the quality is really good, I used them to create a male to female cable (Monoprice Quad Shield) for an IR transmitter over 25 ft of coax, works really well.