Extremely break-resistant (they are polymerised), Faber-Castell's Super-Polymer mechanical pencil leads are available in different thicknesses according to the following colour code:
- 0.35 mm (yellow box). These are the Super-Polymer 9063 leads.
- 0.5 mm (brown box). These are the Super-Polymer 9065 leads.
- 0,7 mm (blue box). These are the Super-Polymer 9067 leads.
- 1 mm (orange box). These are the Super-Polymer 9069 leads.
General characteristics of Faber-Castell Super-Polymer refill leads:
- Perfect for all conventional mechanical pencils.
- Very resistant to breakage, they glide on very easily.
- Each pack contains 12 leads.
- Hardness: HB.
- Intense black lines.
- Easy to refill.
- Different thicknesses according to colour: yellow 0.35 mm, brown 0.5 mm, blue 0.7 mm, and orange 1 mm.