What is the factory glow plug in the .18 in the tornado BB is it a medium or medium/hot like os #3 plug

not sure what it is but, i run mediums in my bb and i started with 5 a year and a half and i have two left. i ordered them from redcat(hsp). theyve lasted a long time for me. still glowing when i pulled them to.

if you wanna run os plugs you need os a3....this is a good plug for all around on engines .18 and smaller

i just wanted to check i have some left of the older odonnell super sport there meduim/hot but they have odog0077 for on and off road i was going to try them i had bad luck with the osA3 plug.I don't no why even the ic3 plug they say there pretty good