but of course you can use other acrylic markers as well

Refill patron for Pilot Greenball Roller Ball Pen 0

5 cm / 11 grams

It covers both ink and felt-tip pens

while the non-toxic

ballograf epoca p ballpoint pen green hiddenproduct but of course you canBallografs classic ballpoint pen that first was introduced in the early 60's. Timeless designed ballpoint pen available in several different colors, choose between the classic blue or the new, modern colors. The pen is delivered filled with blue ink, which is certified archive proof and each cartridge writes a total of 8000 meters. The pen is refillable and just like all Ballograf pens, you have lifetime warranty for the mechanical parts of the pen.