Anyone know the Radius of the 18x50 drag chain in the PwnCNC store?

As the title suggests, Does anyone happen to know the R value (RADIUS) of the cable drag chain PwnCNC has in their store? It will be something like 18x50mm R 38/55/75 etc etc

Cable Chain 18x50 – PwnCNC

This chain is currently stuffed with machine and ATC tubing/wires.

thanks. I figured out the stock chain the altmil comes with is r 75! thats why it supports itself in the bend.