Bic Intensity Fineliner Pen 0.8mm Tip 0.4mm Line Assorted Colours (Pack 8) BIC Intensity fineliner pens are great for everyday use, an amazing tool for budding artists, these pens have a metal encased tip and come in a variety of bright colours. The BIC Intensity fineliner pen would be a fantastic edition to your desk or pencil case to liven up your work. The 0.8mm tip gives a line width of 0.4mm.