Technology with the HB Construction Endless Pencil
This Pencil requires no more sharpening and there is no need to worry about broken leads. The Troika Construction Endless Pencil features a permanent and endless HB writing tip for up to 12.5 Miles (20 km) of written word. The HB hardness tip is replaceable, erasable and unbreakable. Each Troika Endless pencil has a six sided aluminum barrel with the Troika CONSTRUCTION design with a centimeter/inch ruler and 1:20 and 1:50 architectural scales.
HB grade pencil tip
Erasable, unbreakable, without sharpening.
Refill has 0.005mm lead wear per written meter/yard