**V4 Micro uses a different size heat diffuser disc, please select accordingly**
Stainless are the original diffuser material, Titanium are good for the V3 Micro as they are not affected by magnets.
2-pack. Each Device we make is designed for use with this little heat diffuser disc. It's correct position is to point the concave downward, sort of like if you were to use it as a pipe screen.