Pentel Original Sign Pen S520 Fibre Tip Pen 2mm Tip 1mm Line Green (Pack 12) - S520-DThe Pentel Sign Pen S520 Green ink is the original fibre tipped pen. It has non permanent water based ink and an acrylic fibre tip which creates a smooth writing feel and a tip that remains durable throughout its use. The designer's choice perfect for graphics and illustrations. The 2. 0mm tips give approximately 1mm line width and it is made from at least 83% recycled material. It has certainly withstood the depths of time as is celebrating its 50th