HB Lead Grade
The HB lead grade falls in the 12th position of 22 on the widely recognized 10H-10B scale (H=hard, B=black). HB is considered 1 of the 3 central positions, dark enough to read whilst hard enough to minimise smudging
Filter
Ultra Polymer Leads Refill
Tombow
Pencil Leads Refill
Caran d'Ache
Super Polymer Leads Refill
Faber-Castell
Griffix Pencil Leads Refill
Pelikan
Mars Lumograph Graphite Pencil
Staedtler
Mars Micro Leads Refill
Staedtler
Mars Carbon Leads Refill
Staedtler
Tradition Graphite Pencil
Staedtler
Noris Graphite Pencil
Staedtler
Graphite Leads
Kaweco