The uni-ball PIN is a fibre tip drawing pen which features fade-proof and water-resistant Super Ink. Its solid, pigment ink line can easily be used with watercolours as the ink will not smudge when wet, making it ideal for professional artists and illustrators; graphic artists, architects and amateur hobbyists alike. Featuring a nib supported and protected by steel, these PIN drawing pens are durable and will not be damaged by stencils. Supplied in a pack of 12 pens with 0.3mm nibs.