Kind of seems like the guy doesn’t know what’s up and is just reselling
Crankarm looks fine though, but the bolt is a bit frayed, or is it the lighting?
DFS claim to manufacture this crank and even supplied test data for stiffness.
When I contacted them directly, they mentioned they hadn’t yet produced installation instructions, as they were in the process of moving premises. I did point out it’s not ideal selling a crank like this without proper instructions!
They initially said to use Cybrei’s instructions, but after installing, it was clear those weren’t suitable. In the end, I followed the Elilee crank instructions, and that worked — the main issue was just getting the spacers installed correctly.
As for the bolt, it’s absolutely fine. I’ve had to take the crank on and off a few times, so what you’re seeing is just some black paint worn off the outer edge.