For beginner artists and professional alike, the Uni-ball PIN Drawing Pens deliver clean, precise lines and boast fade-proof, water-resistant Super Ink. Ideal to use along with watercolours, these pens do not smudge when wet. They are versatile and suited to a wide range of techniques, including outlines, technical drawing and cross-hatching. This pack of twelve includes pens with various nib sizes, allowing you to produce several different line widths. The nibs are extra strong, ensuring longevity and will not be damaged when used with stencils. . Pack of 12 drawing pens in black ink . Various nib sizes from 0.1-0.8mm . Very strong, durable nibs . Fade proof, water resistant Super Ink . Suitable to use with watercolour work