Diplomat Roller Ball Pen Refill (Black) Nib Size:Medium making it perfect for organizing

making it perfect for organizing reading materials and important documents

it is durable and can withstand frequent use

The thick easy-grip handles allow you to achieve minor details and are suitable for all types of paints ad mediums including acrylic

in line with the ergonomic design

Unlike mineral-based modeling clays

Diplomat Roller Ball Pen Refill (Black) Nib Size:Medium making it perfect for organizingThe Diplomat Metal Rollerball is a rebranded Schmidt 5888 Rollerball refill. This refill will fit most pens that take a standard rollerball (RB). It is available from Diplomat in black or blue ink in a medium line width. Schmidt offers the 5888 in additional line widths and colors. Most pen and refill makers offer substitutes for this refill in a metal or plastic body. Diplomat is a well known brand that specializes in writing instruments,