The uni-ball Onyx pen features a sturdy metal roller point with liquid ink that ensures a smooth, flawless writing experience. The precision tungsten ball allows for consistent ink flow as you write, so your writing is fluid and pristine. Its durable metal point is excellent for marking carbon copies or multipart forms. The easy-to-hold matte black barrel prevents writing fatigue. The Onyx offers exceptionally reliable writing. The convenient cap slides off and snaps onto the back, so you won’t misplace it. For a pen that’s affordable yet consistent, pick up a uni-ball Onyx. The uni-ball® Onyx® Rollerball Pen is available in two sizes, Micro (Extra-Fine) Point - 0.5 mm and Fine Point - 0.7 mm