I mentioned in another thread that there are various tube/body kits that are available for the Evic - mainly manufactured in steel.
Since then, I've discovered a few other different types.
I presuming as the Evic becomes even more popular, demand will increase for mod tubes.
I'm expecting you'll see a good amount of tubes available in the future.
Kir Fanis - steel telescope mod;
bOd - steel telescope mod;
Siam/Pink Mule - steel body kits (18350,18500,18650 three designs);
Highendsmoke - steel body set (licensed by Joyetech);
vaportools (?) - steel body set;
Digitalsteam - steel body set;
Please add any new versions you may stumble across...