Faber-Castell TK 9071 Lead 3.15mm

The break-resistant and exceptionally smooth leads for refilling the FC clutch pencils are deep black, blueprintable and can be easily erased. Available in 14 grades of hardness. The grades 6H to 3B have a lead diameter of 2 mm, 4B to 6B have a lead diameter of 3.15 mm.