As far as im aware Tom the aluminium ones would be best for stopping heat transfer from atty to mod, its why i linked the al ones for you
but tbh i dont think its that much of a big deal, just go with what ever your attys or mods are made of so the colour matches and is more pleasing to the eye, you will still get a bit of heat transfer through the 510 pins to your mod but not as much as you would without the heat fins.
Maybe get an assortment of all materials, they are cheap enough
edit: yeah get the kepler 3 pack and get an al one as per link i give you, i have an al one on the way to try out
Maybe get an assortment of all materials, they are cheap enough
edit: yeah get the kepler 3 pack and get an al one as per link i give you, i have an al one on the way to try out