Another great deal from XO Vape. 5 pack of black CE4 clearomizers. Ideal for starters or customers used to CE4 atomisers. Do not fill the e-liquid into the centre hole. It is best practice to only fill the oil upto 1.2ml. After adding oil, please let the device stand for at least 7 minutes to allow e-liquid to be absorbed into coil chamber. This will help to avoid burnt taste.