M3003. Posca Paint Marker, Fine, PC-3M.
These fine line markers have a 1mm bullet tip that is great for fine lines and detail work.
Posca markers contain opaque water-based paint for marking on almost anything: metal, wood, glass, plastic, plaster, canvas and more. Will bond permanently to wood, clay pots, poster board, plaster and other porous materials. Marks on non-porous/sealed surfaces are waterproof but can be removed with an ammonia-based cleaner. Popular with surfboard designers and rock painters. Widely used for customizing things like shoes, headphones, etc. Excellent for chalkboard signs- even those exposed to the weather. Great for temporarily marking up glass windows. Acrylic-type paint is non-toxic, acid-free, odorless, lightfast, and Xylene-free