Rotring Isograph Nib 0.25 to 0.7 Ref: 5700 choose nib size Contents : 0.25 , 0.35 . 0.5 or 0.7 replacement nib Easy clean refillable system using waterproof bottled ink. Ideal for black and coloured drawing inks. Precise line widths to ISO 128 (drawing) and ISO 3098/1 (lettering). Manufacturer: Rotring Ref. 5700   Price: £15.68 (Including VAT at 20%) Choose size required 0.25 mm0.3 mm0.35 mm0.5 mm0.7 mm Quantity:   Home Page for Discount Art Craft and Graphic Materials from StudioArtshop.co.uk