Sentinel Mod Line FastTech

[roosterado]

Aluminum---SS with Brass----Brass I paid about $45 for them. I have only tried the Aluminum. It is a improvement over the Kamry K100 I keep on my build table for pulsing coils. A sturdier-smooth Treads.

 

[roosterado]

https://www.youtube.com/watch?v=r5ZfBfPDjHs

 

[Bad Ninja]

K100s were okay back when there weren't alot of options for vapers in a budget.
Nowadays clones are available with build quality as good as the original.
Those clones you have there are all light years beyond a k100 in build quality and performance.