The pen barrels in this ballpoint and rollerball pen set are made of matte coloured anodized recycled aluminium with shiny chromed accessories. Aluminium is a highly recyclable material and by choosing this pen set, you can support more sustainable practices and give new life to discarded aluminium materials. These pens serve as a practical and more sustainable option for individuals and organizations looking for environmentally friendly writing instruments. Pen ink colour: Black. Nib size: 1. 0 mm. Writing length: 800 metres. Delivered in a black gift box with a black silk ribbon. Box size: 16. 2 X 5. 1 X 2. 7 cm.