I got 2 SD Key Ring's today and they look so nice with a 3.5ml tank on them..they also fit nicely in my pocket with only the very tip sticking out with a drip tip on it..I removed the lanyard from them because I won't be using them on a key ring. In the pic below is a SmokTech 3.5ml tank with a slotted 2.5ohm XL CE2 in it..it works really good too. I think I'll buy 1 or 2 more so I will have them for when I'm out and I have a few 3.5ml tanks to use with them..I could carry 3-4 of them with different flavors in my pocket 
