Micron felt-tipped artist pens will not feather or bleed on paper.
Great for precision work in many applications. Different levels of fine detail can be achieved with different sizes. A great pen to use with pencils and over dry watercolors, signatures & guest books. Store pen on its side to keep the wick wet.
Waterproof, lightfast, acid-free, archival and non-toxic. 
Tip: When using with a ruler, raise the ruler up with 2 pennies to prevent smearing.
Pens sold as singles : oo5 (0.20mm ) 01 (0.25 mm), 02 (o.3mm), 03 (0.35mm), 05 ( 0.45mm), 08 (0.50mm)
Set of 3 : Black ( 01, 03, 05 )
Set of 4: Sepia ( 01, 05, SR. GR )
