New CE3 Smokymizers. New tougher tube, solder free. Transparent white or blue, 2.4-2.7 ohms, These hold about 1.2ml liquid, bottom coil design. A syringe is needed to refill. Best below 4V

These work great, do not crack, but are kind of difficult to refill. Price is for a 5 pack

To prevent leaking while you refill it is important to use the included silicon cap
Remove the top cap 
Use tweezers to remove the tiny inner plug
Inject e-juice through the small side hole where the plug was
Replace the plug and top cap with tweezers