To get extra protection

Fifty sheets of 70/75 g/m² satin-finish paper with high uniform clarity — accepts technical drawing inks

The HB grade lands in the middle ground most everyday writing and sketching calls for: dark enough to read clearly

it only reacts under UV light and when using it on porous surfaces like plastic

ballograf ballpoint pen desk set white Os Gemeos To get extra protectionBallograf Desk Set in white a Swedish design icon since 1961. Originally created to keep pens from disappearing from banks and post offices, it's now found everywhere from professional receptions to MoMA in New York. Hand assembled in a seven step process at the Ballograf factory in Sweden. Premium oil based archive certified ink delivers smooth, skip free writing that works in extreme temperatures. Writes 8,000 meters per refill roughly nine times