Line thickness: 5 mm, hardness grade: HB, set: No, pencil type: mechanical pencil, user: office, adults, creative supplies, school, ergonomic writing: Yes
- Solid metal shaft for ideal weight balance
- Adjustable hardness grade indicator for identification
- Hexagonal shape prevents rolling
- Rigid lead guide tube to prevent lead breakage
- Precise lead advancement with brake mechanism
- Case made of durable brass