Summary Wanted a spool holder that I could fit next to my monitors. Small and simple. Instructions This will require 4 M8 25 bolts, 4 M8 nuts, 4 M8 Washers, and 4 608 Bearings. Bearings sit just above the walls so the spool should turn just fine. Also, I added some small rubber feet I got from Lowes to help it from moving around on the desk.