What is this? *Images*

[mpierce9]

I believe this is the Orifice Tube. I removed it from the A/C pressure hose just at the accumulator.
I've googled Orifice tubes and cannot find a similar looking item to the pictures below.
I want to confirm what this is and what I can replace it with. In the third picture you can see inside, there is a broken tip.
During removal of this object there was several small metallic shards that I imagine were the part of what has broken off.
This is from a 1975 Blazer with Factory A/C.