Pica-Dry - graffite ink specifically for woodworkers for precise marking on wood. Not recommended for laminated surfaces, due to its hardness it can leave grooves.
Pica Marker | Ink refill kit for Pica Ink (for deep holes) and Pica Big Ink -easy refill for long lasting marker use: This allows you to refill ink easily and quickly, it's eco-friendly and economical. You don't have to keep buying new ones.