The Parker Vector rollerball pen collection: An easy introduction to excellent calligraphy. Parker Vector rollerball pens rewrite the rules for calligraphy with bold colours and a variety of coatings. These writing instruments are the perfect introduction to the world of Parker. They feature stylish, uncomplicated designs and a practical cylindrical barrel. Each rollerball pen is filled with incredibly smooth dark ink that delivers precise lines day after day. Parker Vector writing instruments are ideal for those who have big plans. Colourful, eye-catching and stylish designs; durable, scratch-resistant coatings; practical, ergonomic cylinder barrel; shiny stainless steel trims; consistently easy flowing rollerball design.