I made this because some of my rods do not have hook keepers, and I find that pretty annoying. This was measured specifically for the Handing Magic L ultralight BFS rod, the clip has an internal diameter of 7mm. It snaps on perfectly, and due to the spot I measured on the rod, it will not slide up. Scale it to fit whatever rod you want!

I printed this in resin, it should work just fine on FDM. 100% infill for durability.