Product Description uni PIN Fineliners are loved by artists and professionals around the world. Especially suited for drawing, illustration and design, this versatile fineliner features Super Ink technology, which provides high intensity, depth and water-resistance without bleed-through. The nib is supported and protected by steel meaning the PIN drawing pens are long-lasting and will not be damaged from use with stencils. The pigmented ink is quick-drying for smudge-free erasing while inking over drawings.