The Originators of the
HB Degree System
Hardtmuth® Graphite is a premium lead that has been used in our professional artist’s pencils since 1802. Franz Hardtmuth, inventor of the graphite degree system, chose H after the family name Hardtmuth, B for the town Budějovice where our pencils are made, and F after himself. This varied degree drawing instrument has received accolaids from the world fairs in New York, Paris, London, Vienna, and Milan, and from Queen Victoria, who bestowed the name Koh-I-Noor on the pencils after the world reknown diamond as a representation of their finest quality.
LEADS & HOLDERS
Range 10 Degree: 4H-4B
Metallics, Chalks, & Charcoal
Shape: Round and Hexagonal Barrels
Koh-I-Noor lead holders are precision made with metal barrels and mechanical components. The designer line of lead holders have sharpeners built into the caps, which simply screw and unscrew from the holder. There are two different size leads that fit the three main types of holders: 2mm and 5.6mm, and they are available in 10 degrees of graphite as well as specialty drawing leads. Click the chart below for a compatibility listing of leads.