HOLLOWTIPS Monogram Pen $30 The custom “Monogram Pen” is a 380mAh multi-voltage battery and comes equipped with a preheating setting to prevent oil from clogging, so you receive an unobstructed, satisfying inhale. 0 comments on “HOLLOWTIPS Monogram Pen” Add yours → Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Notify me of new posts by email. This site uses Akismet to reduce spam. Learn how your comment data is processed.