This is a very good
nipple wrench.
I'm going to go against common wisdom here and state that the shaved lead ring, not the lube over the ball that prevents chain fires, Lube is not going to stop the hot gases. IMHO chain fires are more a nipple problem than anything else. (flame on)
I find the lube over ball to be extremely messy and is one of the reason I sold my ROA years ago. I have started using grease cookies and wish I had known about thirty years ago. The grease coolie provides all the lube you need and it keeps the fouling soft.
For my 1858's I shoot
28-30gr
grease cookie
rb with no lube over ball.
#10 cap