The Pin Fineliner Pen by Uni-Ball is very popular amongst professional and amateur artists alike including designers, and at an unbeatable value this is one of the most in demand pens on the market. These Pin range fineliners utilise super ink which makes it waterproof, fade resistant and even tamper proof making it impossible to fraudulently modify any documents. So if you like to mix mediums and work liquid based such as watercolours then the ink will not smudge. Built with a sleek design and strong steel nib attached, the PIN fineliner is a great addition to add to your technical drawing pen collection. - Tips: 0.5mm - Single Uni Pin - Colour is Dark Grey - Large range of other nib sizes making the Pin range great for illustrators and designers of all skill levels - Smooth and consistent ink flow - Features high quality Super Ink that is waterproof, fade resistant and tamper proof