Thornton's Luxury Goods Parker Style Ballpoint Pen Refills, 1.0mm, Medium Point, Black Ink - Pack of 5 The standard ballpoint refill fits many brands of ballpoint pens that take a Parker Style Ballpoint refill. Bold colors and solid lines. Count on consistent ink flow for smooth writing Now with new and improved instal-flow ink. Smoother, long-lasting ink. Black Ink - Medium Point