Ya, I have been waiting to find just the lead rather than paying $10 for a nicely made glow adapter unit. I just found them at Hobby People for $3.50, for just the lead with boot. I ordered 3 of them. I accidentally broke one of my $15 Rimfire plugs, darn it. The upper ceramic insulator cracked off from abusing it while trying to make a clip to fit in the groove. I think I can still use it if I just put some additional insulator around it and maybe a touch of CA thin. In any case I have another one if that one is shot. One thing I noticed is the plug runs very black and dirty, probably from the high oil content, but I know they foul up at idle really fast, probably because it's very cool at idle. Not like the 2% oil mix I'm used to which runs tan in my 40hp 2-stroke. -Tom