The Pilot Greenball liquid ink pen will impress you with the fluid intensity of its ink. You're sure to love its remarkable durability and simple, modern design. The Greenball is not only a truly reliable office partner and travel companion but also a great choice for those who prefer environmentally friendlier pens but who are not willing to sacrifice writing quality as it is made from 89.2% recycled plastic.The Pilot Greenball liquid ink pen produces a flawless ink flow, ideal for thick, bold strokes. Its grip is designed for optimum comfort and the liquid ink adds depth to the rich colours and strong lines produced. The pens medium tip ensures precision and accuracy and the shape-retaining durable tungsten carbide ball has grooves for additional support. Another added bonus: the Greenball is refillable and so helps you reduce single-use plastic consumption. The addition of airplane-safe technology helps protect the pen from leakage caused by changes in air pressure.Medium tip: 0.7 mm, line width: 0.35 mm.