Ahhhh, I see you got it already, Darrell. I made up a tube set from the peep sight tubing I got from my friend at an archery pro shop. This is good stuff! The diameter of yours looks to be the same as the tubing I got. OD appears to be same as 2040, but wall diameter is thicker. Could this stuff be 2050? I can attest that at 400% elongation it sends 1/4 steel blistering downrange!