I snagged up a few of the older Allparts 'Ebanol' nuts after they were discontinued and would occasionally pop up on Reverb. They absolutely worked as well as the very best slotted / grooved / lubricated graphite or bone nut. The Un-Lock by Graph Tech loogs very similar to the Allparts Ebanol - just made of their graphite infused material. I'm betting they work well. The design is good, their material is good, and all the other pre-slotted nuts I have gotten from Graph Tech have been really well made.