The highly economical Uni Pin drawing pen features waterproof and fadeproof pigment ink. Ideal for all types of art and design, including sketching and technical drawing, the steel-supported polyacetal nib is available in a wide range of line widths. Metal surround protects the nib and makes these pens suitable for use with stencils. Black ink - part of Uni's Super Ink range - fade-resistant, water-resistant and tamper-proof. Featuring both fade resistant and waterproof ink, the Uniball Pin Fine Liner Drawing Pen is the perfect essential for any budding artist looking to create their next masterpiece with ease. Boasting a premium-quality and steel-protected nib, this lightweight yet versatile drawing pen is designed to even work well with the use of watercolours. Single technical drawing fineliner pen from uni-ball's Pin range.