Boge cartomisers are recognised as being one of the best available.
These have two Pre-punched Holes measuring 1ml on either side,
ideal to be used in tanks, no need to punch yourself.
The holes are 1cm from the base of the carts.
To use just take the cap off the cartomizer and fill with e-liquid, then remove
the cap from the battery end connector and attach the cartomizer to the battery.
When filling alow to stand for 30 mins and fill further. Repeat this process until
the filler material will not soak up any more liquid.
Just select the required amounts using the drop down menu above.
Filling Boge Cartomizers on YouTube -