How-To: Fill Pelikan Pens & Pencils | The Pelikan's Perch
In/out motion by twist 2 - YouTube
The Twist Pen is all about creating an unforgettably satisfying user-experience - Yanko Design
Amazon.com : Nekigoen Parker Compatible Ballpoint Pen Refills Work for Most Brands Pens with Smooth Writing, Waterman Compatible Spring Refill Replaceable Twist Action Medium Point Refills 1.0mm Pack of 15 (Black) :
ParKoo Twist-Write Retractable Erasable Gel Pens, Fine Point 0.7 mm, N
The Twist Pen is all about creating an unforgettably satisfying user-experience - Yanko Design