Smaller tape dispensers may have a removable lid that allows you to access the roll of tape inside. Others may have a slot or opening on the side or top where you can insert the end of the roll of tape. Stubben has been putting out these easy to understand https://iblog.iup.edu/gyyt/2016/06/07/all-about-burnie-burns/comment-page-5298/?replytocom=316231#respond