Pilot Products - Pilot - Dr. Grip Center of Gravity Ballpoint Retractable Pen, Black Ink, Medium - Sold As 1 Each - Comfortable, balanced writing. - Geometrically contoured, wide double-layer grip. - Turbo-charged ink. - Recommended by the Arthritis Foundation. - Retractable. Comfortable, balanced writing. Geometrically contoured, wide double-layer grip. Turbo-charged ink. Recommended by the Arthritis Foundation. Retractable.