It seems Kamry is working on a revision of the ever popular K100. This isnt saying there is something wrong with the K100. However, in the vaping world - nothing stands still. Upgrades are now constant.
These are a mechanical mod that come with a removable vapesafe style fuse to protect against a shorting battery. You will also notice the style has changed, the ribbing is now gone and they have gone for a more minimalist look with new colors. Hoosiervapes brought these to my attention, and will stock them if they meet their strict standards.
As a side note, look for china made vapesafe style fuses - super super cheap. $2-$3.00 each.