I have no idea. There's very little description. Before you go carto shopping, a few lessons on filling your carto:
The best method for filling a carto is the condom method. Your carto should have a rubber cap on either end. We call those condoms (why? I have no idea).
1. Remove the condoms.
2. Next remove the plastic cap on the end of the carto. To do this, stick something in the hole in the center and pry it off. I use a large safety pin; other use a gem clip. You should see the white polyfill inside of the carto.
3. Take one of the condoms and fill it about 2/3 with juice.
4. Slowly insert the battery end of the carto into the condom. You want to go slow because the goal here is to fill the wick from the bottom up; jamming it down will force the liquid straight to the top, which really defeats the whole purpose.
5. Once all of the juice has been suck up out of the condom, examine the polyfill. If it doesn't look like a slushy, Then tip the carto to 45 degrees and drop juice into it until it looks wet.
6. Remove the condom and blow through both ends into a paper towel. This gets the juice out of the air hole.
7. Place a drip tip on the end of the carto. If you use a drip tip instead of replacing the plastic cap, it's much easier to top off the carto.
8. When you notice the flavor going away, or a drop in vapor, it's time to top off.
If you're worried about how long you can vape before refilling, consider getting some Smoketech 1.7ohm LR cartos. These hold almost 2ml of juice, which is about twice what the standard carto holds. You can get them cheaply at Crystal Clear Vaping. Another reason is that they should produce an outstanding vapor on your device.