Linc Pentonic Ball Pen Refill (Black Ink, 0.7mm, Pack of 10), Linc, Ball Pen Refills, ball Pen, Ink, Welcome to the world of writing, a world of expression. Welcome to the world of Linc. Our range of innovative products is designed to make your life smoother and better. PENTONIC is the newest addition to our wide range of mighty weapons. PENTONIC Ball Pen refills have a 0.7mm ball tip which helps in skip-free writing. ,