Yes it just screws right off . I started with that e cig and i gotta say ,it really turned me off from ecigs because i thought all of them will be like that and those imo were simply horrible . I just tossed it in the trash after a week it was so bad .I then just gave up on ecigs for about a year .A couple months ago i did some research after someone told me about real ecigs and decided to give it a try . This time i got a riva510se from liberty flights which is very cheap but great ecig . It completely changed my opinion on ecigs . I am now a daily vapor and love it so much . The fifty one trio i had is literally like a toy compared to a riva and the riva is not even one of the best . I now use a homeade Variable voltage e cig and will never look back . I would say try getting a riva or ego and you will definitley be more than happy . One of the worst things about the fifty one is there is only two flavors both being horrible . With a real ecig you have thousands of great flavors as well as them being cheaper .