1mm-5mm line width depending on pressure and which part of the tip is used.
 
The Dataglo SQ Highlighter is a traditional square highlighter which uses non-toxic, cap off ink in bright colours.
 
The highlighters barrel is as per ink colour with black, pocket clip caps. They can be used to highlight on all paper types without fading. Ideal for school and office use.
 
Assorted Colours - Wallet of 6.