The OHTO Color Pen is a 'free-ink' pen This means it has a hollow barrel with no fibre core - ensuring plenty of ink and consistent delivery until the last drop. The tough rollerball tip is made from stainless-steel with a tungsten-carbide ball. The hard-wearing materials ensure a stable line width throughout the life of the pen.

• Durable Tip

• Same line quality of fiber tip pens

• Waterproof Ink

• Archival-Safe Pigment

• Strong and Functional Clip

• Includes sizes 0.05, 0.1, 0.2, 0.3, 0.5, 1.0