Trust me, it is not flat, it is just sanded down, like the nitros are.
And it is a full length tube with 3.5 grams
I made the spreader/leading edge connectors
They are made out of PTFE tubing, which provides several advantages over standard vinyl tubng or apas. Lighter, stiffer and thanks to the teflon, the insertion and puling out the rods doesn't needs much force.
So they are a very good fit to use together with fragile rods for light wind builds.
The 4 connectors wight less then a single tiny apa...