I'm looking for a drip shield for my eGo C twist. My question is there are two set of threads on an eGo and also my kGo. I understand the inside (female) thread that my carto's screw into is a 510. What is the outer (male) thread that the cone screws onto. I'm still learning about the different sizes and the eGo and kGo are the only two types I'm familiar with.