What's my Car Part and where can I get it in NYC?

What is your question?

Here's some pictures: uncover.nyc/2015/04/auto-parts/ I have a 1996 Audi Cabriolet- the part was connected to the steering wheel and the wheel axle. My friend, who dabbles in mechanics, said it was something like a "drag axle connector" but didn't know the name and that led me nowhere. What happened was that the wheel suddenly didn't turn the car- it wasn't the power steering since the wheel itself was loose but the tires wouldn't turn. Thanks in advance